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Finding the Fourth Proportional to 117,425.80, 176,138.70 and 38,542.60

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Solution

The fourth proportional to 117,425.80, 176,138.70 and 38,542.60 is: 57,813.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,425.80 : 176,138.70 = 38,542.60 : x
  2. Step 2: Convert to fraction form
    117,425.80/176,138.70 = 38,542.60/x
  3. Step 3: Cross multiply
    117,425.80x = 176,138.70 × 38,542.60
  4. Step 4: Simplify right side
    117,425.80x = 6,788,843,458.62
  5. Step 5: Solve for x
    x = 6,788,843,458.62/117,425.80
  6. Step 6: Final answer
    x = 57,813.90

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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.