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Finding the Fourth Proportional to 265,200.80, 397,930.80 and 124,935.20

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Solution

The fourth proportional to 265,200.80, 397,930.80 and 124,935.20 is: 187,463.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,200.80 : 397,930.80 = 124,935.20 : x
  2. Step 2: Convert to fraction form
    265,200.80/397,930.80 = 124,935.20/x
  3. Step 3: Cross multiply
    265,200.80x = 397,930.80 × 124,935.20
  4. Step 4: Simplify right side
    265,200.80x = 49,715,564,084.16
  5. Step 5: Solve for x
    x = 49,715,564,084.16/265,200.80
  6. Step 6: Final answer
    x = 187,463.85

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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.