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Finding the Fourth Proportional to 81,859.59, 122,836.46 and 34,470.95

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Solution

The fourth proportional to 81,859.59, 122,836.46 and 34,470.95 is: 51,726.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,859.59 : 122,836.46 = 34,470.95 : x
  2. Step 2: Convert to fraction form
    81,859.59/122,836.46 = 34,470.95/x
  3. Step 3: Cross multiply
    81,859.59x = 122,836.46 × 34,470.95
  4. Step 4: Simplify right side
    81,859.59x = 4,234,288,684.30
  5. Step 5: Solve for x
    x = 4,234,288,684.30/81,859.59
  6. Step 6: Final answer
    x = 51,726.24

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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.