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Finding the Fourth Proportional to 124,818.80, 187,033.80 and 108,100.40

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Solution

The fourth proportional to 124,818.80, 187,033.80 and 108,100.40 is: 161,982.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,818.80 : 187,033.80 = 108,100.40 : x
  2. Step 2: Convert to fraction form
    124,818.80/187,033.80 = 108,100.40/x
  3. Step 3: Cross multiply
    124,818.80x = 187,033.80 × 108,100.40
  4. Step 4: Simplify right side
    124,818.80x = 20,218,428,593.52
  5. Step 5: Solve for x
    x = 20,218,428,593.52/124,818.80
  6. Step 6: Final answer
    x = 161,982.24

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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.