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Finding the Fourth Proportional to 606,872.20, 911,292.45 and 408,073.90

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Solution

The fourth proportional to 606,872.20, 911,292.45 and 408,073.90 is: 612,772.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,872.20 : 911,292.45 = 408,073.90 : x
  2. Step 2: Convert to fraction form
    606,872.20/911,292.45 = 408,073.90/x
  3. Step 3: Cross multiply
    606,872.20x = 911,292.45 × 408,073.90
  4. Step 4: Simplify right side
    606,872.20x = 371,874,664,112.06
  5. Step 5: Solve for x
    x = 371,874,664,112.06/606,872.20
  6. Step 6: Final answer
    x = 612,772.61

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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.