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Finding the Third Proportional to 9,942 and 14,715

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Solution

The third proportional to 9,942 and 14,715 is: 21,779.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,942 : 14,715 = 14,715 : x
  2. Step 2: Convert to fraction form
    9,942/14,715 = 14,715/x
  3. Step 3: Cross multiply
    9,942x = 14,715 × 14,715
  4. Step 4: Simplify right side
    9,942x = 216,531,225
  5. Step 5: Solve for x
    x = 216,531,225/9,942
  6. Step 6: Final answer
    x = 21,779.44

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.