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Finding the Fourth Proportional to 167,591.80, 251,387.70 and 138,067.30

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Solution

The fourth proportional to 167,591.80, 251,387.70 and 138,067.30 is: 207,100.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,591.80 : 251,387.70 = 138,067.30 : x
  2. Step 2: Convert to fraction form
    167,591.80/251,387.70 = 138,067.30/x
  3. Step 3: Cross multiply
    167,591.80x = 251,387.70 × 138,067.30
  4. Step 4: Simplify right side
    167,591.80x = 34,708,420,992.21
  5. Step 5: Solve for x
    x = 34,708,420,992.21/167,591.80
  6. Step 6: Final answer
    x = 207,100.95

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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.