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Finding the Fourth Proportional to 83,391.29, 125,086.16 and 36,039.86

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Solution

The fourth proportional to 83,391.29, 125,086.16 and 36,039.86 is: 54,059.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,391.29 : 125,086.16 = 36,039.86 : x
  2. Step 2: Convert to fraction form
    83,391.29/125,086.16 = 36,039.86/x
  3. Step 3: Cross multiply
    83,391.29x = 125,086.16 × 36,039.86
  4. Step 4: Simplify right side
    83,391.29x = 4,508,087,826.85
  5. Step 5: Solve for x
    x = 4,508,087,826.85/83,391.29
  6. Step 6: Final answer
    x = 54,059.46

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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.