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Finding the Fourth Proportional to 484,062.80, 726,117.96 and 129,080

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Solution

The fourth proportional to 484,062.80, 726,117.96 and 129,080 is: 193,626.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,062.80 : 726,117.96 = 129,080 : x
  2. Step 2: Convert to fraction form
    484,062.80/726,117.96 = 129,080/x
  3. Step 3: Cross multiply
    484,062.80x = 726,117.96 × 129,080
  4. Step 4: Simplify right side
    484,062.80x = 93,727,306,276.80
  5. Step 5: Solve for x
    x = 93,727,306,276.80/484,062.80
  6. Step 6: Final answer
    x = 193,626.34

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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.