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Finding the Fourth Proportional to 83,401.80, 125,161.20 and 36,687.48

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Solution

The fourth proportional to 83,401.80, 125,161.20 and 36,687.48 is: 55,056.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,401.80 : 125,161.20 = 36,687.48 : x
  2. Step 2: Convert to fraction form
    83,401.80/125,161.20 = 36,687.48/x
  3. Step 3: Cross multiply
    83,401.80x = 125,161.20 × 36,687.48
  4. Step 4: Simplify right side
    83,401.80x = 4,591,849,021.78
  5. Step 5: Solve for x
    x = 4,591,849,021.78/83,401.80
  6. Step 6: Final answer
    x = 55,056.95

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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.