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Finding the Fourth Proportional to 221,781.20, 332,574.60 and 88,617.20

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Solution

The fourth proportional to 221,781.20, 332,574.60 and 88,617.20 is: 132,886.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,781.20 : 332,574.60 = 88,617.20 : x
  2. Step 2: Convert to fraction form
    221,781.20/332,574.60 = 88,617.20/x
  3. Step 3: Cross multiply
    221,781.20x = 332,574.60 × 88,617.20
  4. Step 4: Simplify right side
    221,781.20x = 29,471,829,843.12
  5. Step 5: Solve for x
    x = 29,471,829,843.12/221,781.20
  6. Step 6: Final answer
    x = 132,886.96

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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.