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Finding the Fourth Proportional to 492,490.49, 738,680.32 and 132,687.92

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Solution

The fourth proportional to 492,490.49, 738,680.32 and 132,687.92 is: 199,016.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,490.49 : 738,680.32 = 132,687.92 : x
  2. Step 2: Convert to fraction form
    492,490.49/738,680.32 = 132,687.92/x
  3. Step 3: Cross multiply
    492,490.49x = 738,680.32 × 132,687.92
  4. Step 4: Simplify right side
    492,490.49x = 98,013,955,205.73
  5. Step 5: Solve for x
    x = 98,013,955,205.73/492,490.49
  6. Step 6: Final answer
    x = 199,016.95

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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.