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Finding the Fourth Proportional to 20,502.20, 30,753.30 and 7,355.90

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Solution

The fourth proportional to 20,502.20, 30,753.30 and 7,355.90 is: 11,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.20 : 30,753.30 = 7,355.90 : x
  2. Step 2: Convert to fraction form
    20,502.20/30,753.30 = 7,355.90/x
  3. Step 3: Cross multiply
    20,502.20x = 30,753.30 × 7,355.90
  4. Step 4: Simplify right side
    20,502.20x = 226,218,199.47
  5. Step 5: Solve for x
    x = 226,218,199.47/20,502.20
  6. Step 6: Final answer
    x = 11,033.85

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