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Finding the Fourth Proportional to 606,986.10, 911,463.30 and 439,680.60

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Solution

The fourth proportional to 606,986.10, 911,463.30 and 439,680.60 is: 660,233.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,986.10 : 911,463.30 = 439,680.60 : x
  2. Step 2: Convert to fraction form
    606,986.10/911,463.30 = 439,680.60/x
  3. Step 3: Cross multiply
    606,986.10x = 911,463.30 × 439,680.60
  4. Step 4: Simplify right side
    606,986.10x = 400,752,730,621.98
  5. Step 5: Solve for x
    x = 400,752,730,621.98/606,986.10
  6. Step 6: Final answer
    x = 660,233.79

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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.