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Finding the Fourth Proportional to 606,846.20, 911,253.45 and 408,047.90

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Solution

The fourth proportional to 606,846.20, 911,253.45 and 408,047.90 is: 612,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,846.20 : 911,253.45 = 408,047.90 : x
  2. Step 2: Convert to fraction form
    606,846.20/911,253.45 = 408,047.90/x
  3. Step 3: Cross multiply
    606,846.20x = 911,253.45 × 408,047.90
  4. Step 4: Simplify right side
    606,846.20x = 371,835,056,640.26
  5. Step 5: Solve for x
    x = 371,835,056,640.26/606,846.20
  6. Step 6: Final answer
    x = 612,733.60

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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.