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Finding the Fourth Proportional to 87,714.80, 131,572.20 and 25,377.20

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Solution

The fourth proportional to 87,714.80, 131,572.20 and 25,377.20 is: 38,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,714.80 : 131,572.20 = 25,377.20 : x
  2. Step 2: Convert to fraction form
    87,714.80/131,572.20 = 25,377.20/x
  3. Step 3: Cross multiply
    87,714.80x = 131,572.20 × 25,377.20
  4. Step 4: Simplify right side
    87,714.80x = 3,338,934,033.84
  5. Step 5: Solve for x
    x = 3,338,934,033.84/87,714.80
  6. Step 6: Final answer
    x = 38,065.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.