$30 : x :: 45 : 24$ find the value of x.

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Solution

Given $30 : x :: 45 : 24$
$\frac{30}{x} = \frac{45}{24}$
$⟹ \frac{30}{x} = \frac{15}{8}$
$⟹ x = 8 \times \frac{30}{15} = 16$

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