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Finding the Fourth Proportional to 484,523.31, 726,729.60 and 129,565.01

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Solution

The fourth proportional to 484,523.31, 726,729.60 and 129,565.01 is: 194,332.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,523.31 : 726,729.60 = 129,565.01 : x
  2. Step 2: Convert to fraction form
    484,523.31/726,729.60 = 129,565.01/x
  3. Step 3: Cross multiply
    484,523.31x = 726,729.60 × 129,565.01
  4. Step 4: Simplify right side
    484,523.31x = 94,158,724,257.65
  5. Step 5: Solve for x
    x = 94,158,724,257.65/484,523.31
  6. Step 6: Final answer
    x = 194,332.70

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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.