Answer
$W_1 = W_2\left(\frac{d_1}{d_2}\right)$
Work Step by Step
Multiply $W_2$ to both sides of the equation:
$W_2 \cdot \frac{W_1}{W_2}=W_2 \cdot \frac{d_1}{d_2}
\\W_1 = W_2\left(\frac{d_1}{d_2}\right)$
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