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Finding the Fourth Proportional to 392,531.20, 588,873.60 and 167,891.20

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Solution

The fourth proportional to 392,531.20, 588,873.60 and 167,891.20 is: 251,869.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,531.20 : 588,873.60 = 167,891.20 : x
  2. Step 2: Convert to fraction form
    392,531.20/588,873.60 = 167,891.20/x
  3. Step 3: Cross multiply
    392,531.20x = 588,873.60 × 167,891.20
  4. Step 4: Simplify right side
    392,531.20x = 98,866,695,352.32
  5. Step 5: Solve for x
    x = 98,866,695,352.32/392,531.20
  6. Step 6: Final answer
    x = 251,869.65

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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.