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Finding the Third Proportional to 71,385 and 156,893

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Solution

The third proportional to 71,385 and 156,893 is: 344,826.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,385 : 156,893 = 156,893 : x
  2. Step 2: Convert to fraction form
    71,385/156,893 = 156,893/x
  3. Step 3: Cross multiply
    71,385x = 156,893 × 156,893
  4. Step 4: Simplify right side
    71,385x = 24,615,413,449
  5. Step 5: Solve for x
    x = 24,615,413,449/71,385
  6. Step 6: Final answer
    x = 344,826.13

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.