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Finding the Fourth Proportional to 361,517.85, 542,278.70 and 108,796.61

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Solution

The fourth proportional to 361,517.85, 542,278.70 and 108,796.61 is: 163,195.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,517.85 : 542,278.70 = 108,796.61 : x
  2. Step 2: Convert to fraction form
    361,517.85/542,278.70 = 108,796.61/x
  3. Step 3: Cross multiply
    361,517.85x = 542,278.70 × 108,796.61
  4. Step 4: Simplify right side
    361,517.85x = 58,998,080,979.83
  5. Step 5: Solve for x
    x = 58,998,080,979.83/361,517.85
  6. Step 6: Final answer
    x = 163,195.49

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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.