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Finding the Fourth Proportional to 140,766.60, 194,257.92 and 77,104.56

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Solution

The fourth proportional to 140,766.60, 194,257.92 and 77,104.56 is: 106,404.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,766.60 : 194,257.92 = 77,104.56 : x
  2. Step 2: Convert to fraction form
    140,766.60/194,257.92 = 77,104.56/x
  3. Step 3: Cross multiply
    140,766.60x = 194,257.92 × 77,104.56
  4. Step 4: Simplify right side
    140,766.60x = 14,978,171,448.12
  5. Step 5: Solve for x
    x = 14,978,171,448.12/140,766.60
  6. Step 6: Final answer
    x = 106,404.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.