20 point for each one. Find the third proportional of 18 and 72. Please tell the formula step by step.
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Answer:
228
Step-by-step explanation:
The third proportional of two numbers a and b is defined to be that number c such that a : b = b : c.
=> 18: 72 = 72: c
=> c = 72 * 72 / 18 = 228.
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