Rewrite the equation as .

Multiply both sides of the equation by .

Simplify .

Evaluate the exponents.

Raise to the power of .

Raise to the power of .

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

Simplify .

Evaluate the exponents.

Raise to the power of .

Raise to the power of .

Cancel the common factor of .

Factor out of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Combine and .

Simplify the expression.

Multiply by .

Divide by .

Solve for d 200/((60)^2)=d/((72)^2)