The image shows some math problems involving fractions and equations. The equations appear to involve solving for $x$, but the mathematical steps leading to the solution are incorrect as they are marked with "×".

Let's analyze the first problem and the likely intention of the question:

Equation 1 (Top left corner):

$\frac{36}{x} = \frac{24}{12}$

To solve for $x$, cross-multiply: $36 \cdot 12 = 24 \cdot x$

This simplifies to: $432 = 24x$

Now, solve for $x$: $x = \frac{432}{24} = 18$

Equation 2 (Middle top):

$\frac{36}{12} = \frac{x}{24}$

Cross-multiply: $36 \cdot 24 = 12 \cdot x$

This simplifies to: $864 = 12x$

Now, solve for $x$: $x = \frac{864}{12} = 72$

Equation 3 (Top right):

$\frac{24}{x} = \frac{36}{12}$

Cross-multiply: $24 \cdot 12 = 36 \cdot x$

This simplifies to: $288 = 36x$

Solve for $x$: $x = \frac{288}{36} = 8$

The remaining set of equations follows a similar structure but appears to be a repetition of the above methods. It seems the problems may have been solved incorrectly in the image, as shown by the "×" marks.

Would you like me to analyze the other set of equations further? Let me know if you'd like additional details.

Here are 5 related questions to further explore the concept:

1. How do you cross-multiply two fractions?
2. Can you explain why dividing by zero is undefined?
3. How do you solve proportions involving fractions?
4. How can you check if your solution to a proportion is correct?
5. How do ratios and proportions apply to real-world problems?

Tip: Always simplify fractions where possible before cross-multiplying to make calculations easier.