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Finding the Fourth Proportional to 260,891.64, 391,177.52 and 111,046.60

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Solution

The fourth proportional to 260,891.64, 391,177.52 and 111,046.60 is: 166,501.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,891.64 : 391,177.52 = 111,046.60 : x
  2. Step 2: Convert to fraction form
    260,891.64/391,177.52 = 111,046.60/x
  3. Step 3: Cross multiply
    260,891.64x = 391,177.52 × 111,046.60
  4. Step 4: Simplify right side
    260,891.64x = 43,438,933,592.43
  5. Step 5: Solve for x
    x = 43,438,933,592.43/260,891.64
  6. Step 6: Final answer
    x = 166,501.82

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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.