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Finding the Fourth Proportional to 408,633.80, 612,951.78 and 124,327.04

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Solution

The fourth proportional to 408,633.80, 612,951.78 and 124,327.04 is: 186,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,633.80 : 612,951.78 = 124,327.04 : x
  2. Step 2: Convert to fraction form
    408,633.80/612,951.78 = 124,327.04/x
  3. Step 3: Cross multiply
    408,633.80x = 612,951.78 × 124,327.04
  4. Step 4: Simplify right side
    408,633.80x = 76,206,480,470.13
  5. Step 5: Solve for x
    x = 76,206,480,470.13/408,633.80
  6. Step 6: Final answer
    x = 186,490.89

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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.