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Finding the Fourth Proportional to 117,936.70, 176,645.85 and 71,107.90

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Solution

The fourth proportional to 117,936.70, 176,645.85 and 71,107.90 is: 106,505.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,936.70 : 176,645.85 = 71,107.90 : x
  2. Step 2: Convert to fraction form
    117,936.70/176,645.85 = 71,107.90/x
  3. Step 3: Cross multiply
    117,936.70x = 176,645.85 × 71,107.90
  4. Step 4: Simplify right side
    117,936.70x = 12,560,915,437.22
  5. Step 5: Solve for x
    x = 12,560,915,437.22/117,936.70
  6. Step 6: Final answer
    x = 106,505.57

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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.