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Finding the Fourth Proportional to 88,691.30, 133,049.10 and 29,520.80

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Solution

The fourth proportional to 88,691.30, 133,049.10 and 29,520.80 is: 44,285.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,691.30 : 133,049.10 = 29,520.80 : x
  2. Step 2: Convert to fraction form
    88,691.30/133,049.10 = 29,520.80/x
  3. Step 3: Cross multiply
    88,691.30x = 133,049.10 × 29,520.80
  4. Step 4: Simplify right side
    88,691.30x = 3,927,715,871.28
  5. Step 5: Solve for x
    x = 3,927,715,871.28/88,691.30
  6. Step 6: Final answer
    x = 44,285.24

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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.