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Finding the Fourth Proportional to 80,562.81, 120,883.92 and 36,221.79

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Solution

The fourth proportional to 80,562.81, 120,883.92 and 36,221.79 is: 54,350.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,562.81 : 120,883.92 = 36,221.79 : x
  2. Step 2: Convert to fraction form
    80,562.81/120,883.92 = 36,221.79/x
  3. Step 3: Cross multiply
    80,562.81x = 120,883.92 × 36,221.79
  4. Step 4: Simplify right side
    80,562.81x = 4,378,631,964.62
  5. Step 5: Solve for x
    x = 4,378,631,964.62/80,562.81
  6. Step 6: Final answer
    x = 54,350.54

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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.