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Finding the Fourth Proportional to 117,691.60, 176,537.40 and 71,035.60

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Solution

The fourth proportional to 117,691.60, 176,537.40 and 71,035.60 is: 106,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,691.60 : 176,537.40 = 71,035.60 : x
  2. Step 2: Convert to fraction form
    117,691.60/176,537.40 = 71,035.60/x
  3. Step 3: Cross multiply
    117,691.60x = 176,537.40 × 71,035.60
  4. Step 4: Simplify right side
    117,691.60x = 12,540,440,131.44
  5. Step 5: Solve for x
    x = 12,540,440,131.44/117,691.60
  6. Step 6: Final answer
    x = 106,553.40

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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.