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Finding the Fourth Proportional to 80,008.70, 119,978.49 and 33,229.58

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Solution

The fourth proportional to 80,008.70, 119,978.49 and 33,229.58 is: 49,830.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,008.70 : 119,978.49 = 33,229.58 : x
  2. Step 2: Convert to fraction form
    80,008.70/119,978.49 = 33,229.58/x
  3. Step 3: Cross multiply
    80,008.70x = 119,978.49 × 33,229.58
  4. Step 4: Simplify right side
    80,008.70x = 3,986,834,831.73
  5. Step 5: Solve for x
    x = 3,986,834,831.73/80,008.70
  6. Step 6: Final answer
    x = 49,830.02

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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.