Given the problem, we need to find values $x$, $y$, and $z$ such that:

$a \cdot x + b \cdot y + c \cdot z \leq (a \cdot x) \cdot (b \cdot y) \cdot (c \cdot z)$

Where:

• $a = 3.3$
• $b = 2.92$
• $c = 2.15$

The inequality we need to satisfy is:

$3.3x + 2.92y + 2.15z \leq (3.3x) \cdot (2.92y) \cdot (2.15z)$

Step 1: Simplify the Right-Hand Side

The right-hand side is the product of the individual terms:

$(3.3x) \cdot (2.92y) \cdot (2.15z) = 20.679x \cdot y \cdot z$

So the inequality now is:

$3.3x + 2.92y + 2.15z \leq 20.679xyz$

Step 2: Solve the Inequality

We can divide both sides by $xyz$ (assuming $x$, $y$, and $z$ are non-zero):

$\frac{3.3}{yz} + \frac{2.92}{xz} + \frac{2.15}{xy} \leq 20.679$

This inequality involves solving a non-linear system, where $x$, $y$, and $z$ are variables and $a$, $b$, and $c$ are constants.

Step 3: Consider Specific Values or Solve Numerically

Given the complexity of this equation, finding exact values for $x$, $y$, and $z$ analytically is challenging. However, one approach is to estimate the values numerically or by trial and error.

Let's consider the simplest case where $x = y = z = k$. In this scenario:

$\frac{3.3}{k^2} + \frac{2.92}{k^2} + \frac{2.15}{k^2} \leq 20.679$

$\frac{3.3 + 2.92 + 2.15}{k^2} \leq 20.679$

$\frac{8.37}{k^2} \leq 20.679$

$k^2 \geq \frac{8.37}{20.679} \approx 0.405$

$k \geq \sqrt{0.405} \approx 0.636$

Step 4: Conclusion

In the simplest case where $x = y = z$, each variable should be greater than or equal to approximately $0.636$ for the inequality to hold.

If $x$, $y$, and $z$ are not equal, the problem becomes more complex, and a numerical solution might be needed.

Do you have any questions, or would you like further details on solving this for different values of $x$, $y$, and $z$?

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Here are five related questions:

1. What happens if $x$, $y$, and $z$ are constrained to specific ranges (e.g., $x > 1$)?
2. How would the inequality change if the constants $a$, $b$, and $c$ were modified?
3. Is it possible to solve this inequality using graphical methods?
4. What approach should be used if you want to maximize or minimize one of the variables while maintaining the inequality?
5. How would this problem change if you included an additional variable or constraint?

Tip: When working with non-linear inequalities, checking for boundary conditions or simplifying by assuming equal variables can often provide insights into potential solutions.