Question

If 3:x::15:45, then x=?​

Answer 1

Answer:

9.

Step-by-step explanation:

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Answer 2

Answer:

9

Step-by-step explanation:

Formula for solving proportions

Product of Extremes = Product of Means

$3 \times 45 = 15 \times x$

$135 = 15x$

$\frac{135}{15} = x$

$9 = x$