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Finding the Fourth Proportional to 136,691.64, 205,043.60 and 41,914.88

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Solution

The fourth proportional to 136,691.64, 205,043.60 and 41,914.88 is: 62,874.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,691.64 : 205,043.60 = 41,914.88 : x
  2. Step 2: Convert to fraction form
    136,691.64/205,043.60 = 41,914.88/x
  3. Step 3: Cross multiply
    136,691.64x = 205,043.60 × 41,914.88
  4. Step 4: Simplify right side
    136,691.64x = 8,594,377,888.77
  5. Step 5: Solve for x
    x = 8,594,377,888.77/136,691.64
  6. Step 6: Final answer
    x = 62,874.20

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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.