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Finding the Fourth Proportional to 83,119.80, 124,504.20 and 55,053.30

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Solution

The fourth proportional to 83,119.80, 124,504.20 and 55,053.30 is: 82,463.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,119.80 : 124,504.20 = 55,053.30 : x
  2. Step 2: Convert to fraction form
    83,119.80/124,504.20 = 55,053.30/x
  3. Step 3: Cross multiply
    83,119.80x = 124,504.20 × 55,053.30
  4. Step 4: Simplify right side
    83,119.80x = 6,854,367,073.86
  5. Step 5: Solve for x
    x = 6,854,367,073.86/83,119.80
  6. Step 6: Final answer
    x = 82,463.71

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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.