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Finding the Fourth Proportional to 87,502.56, 120,753.90 and 49,262.76

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Solution

The fourth proportional to 87,502.56, 120,753.90 and 49,262.76 is: 67,982.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,502.56 : 120,753.90 = 49,262.76 : x
  2. Step 2: Convert to fraction form
    87,502.56/120,753.90 = 49,262.76/x
  3. Step 3: Cross multiply
    87,502.56x = 120,753.90 × 49,262.76
  4. Step 4: Simplify right side
    87,502.56x = 5,948,670,394.76
  5. Step 5: Solve for x
    x = 5,948,670,394.76/87,502.56
  6. Step 6: Final answer
    x = 67,982.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.