To convert the given exponential equation into logarithmic form, we start from the statement:

$5^3 = 125$

In exponential form, this means that the base $b = 5$, the exponent $y = 3$, and the result $x = 125$. To rewrite this in logarithmic form, we use the relationship:

$y = \log_b(x)$

Substituting the values:

$3 = \log_5(125)$

Therefore, the logarithmic form of $5^3 = 125$ is:

$\log_5(125) = 3$

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Here are five related questions you might find useful:

1. What is the logarithmic form of $2^4 = 16$?
2. How do you convert from logarithmic to exponential form?
3. What are the properties of logarithms that can simplify calculations?
4. How do you evaluate $\log_2(8)$?
5. What is the natural logarithm and how does it differ from other logarithms?

Tip: Remember that logarithms are the inverse operation of exponentiation, meaning they "undo" exponents.