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Finding the Fourth Proportional to 57,787.44, 79,440.48 and 49,691.44

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Solution

The fourth proportional to 57,787.44, 79,440.48 and 49,691.44 is: 68,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,787.44 : 79,440.48 = 49,691.44 : x
  2. Step 2: Convert to fraction form
    57,787.44/79,440.48 = 49,691.44/x
  3. Step 3: Cross multiply
    57,787.44x = 79,440.48 × 49,691.44
  4. Step 4: Simplify right side
    57,787.44x = 3,947,511,845.49
  5. Step 5: Solve for x
    x = 3,947,511,845.49/57,787.44
  6. Step 6: Final answer
    x = 68,310.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.