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Finding the Fourth Proportional to 137,863.80, 206,795.70 and 125,616.60

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Solution

The fourth proportional to 137,863.80, 206,795.70 and 125,616.60 is: 188,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,863.80 : 206,795.70 = 125,616.60 : x
  2. Step 2: Convert to fraction form
    137,863.80/206,795.70 = 125,616.60/x
  3. Step 3: Cross multiply
    137,863.80x = 206,795.70 × 125,616.60
  4. Step 4: Simplify right side
    137,863.80x = 25,976,972,728.62
  5. Step 5: Solve for x
    x = 25,976,972,728.62/137,863.80
  6. Step 6: Final answer
    x = 188,424.90

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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.