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Finding the Third Proportional to 61,654.50 and 135,432

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Solution

The third proportional to 61,654.50 and 135,432 is: 297,493.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,654.50 : 135,432 = 135,432 : x
  2. Step 2: Convert to fraction form
    61,654.50/135,432 = 135,432/x
  3. Step 3: Cross multiply
    61,654.50x = 135,432 × 135,432
  4. Step 4: Simplify right side
    61,654.50x = 18,341,826,624
  5. Step 5: Solve for x
    x = 18,341,826,624/61,654.50
  6. Step 6: Final answer
    x = 297,493.72

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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.