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Finding the Fourth Proportional to 437,290.92, 655,137.66 and 317,049.66

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Solution

The fourth proportional to 437,290.92, 655,137.66 and 317,049.66 is: 474,995.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,290.92 : 655,137.66 = 317,049.66 : x
  2. Step 2: Convert to fraction form
    437,290.92/655,137.66 = 317,049.66/x
  3. Step 3: Cross multiply
    437,290.92x = 655,137.66 × 317,049.66
  4. Step 4: Simplify right side
    437,290.92x = 207,711,172,356.20
  5. Step 5: Solve for x
    x = 207,711,172,356.20/437,290.92
  6. Step 6: Final answer
    x = 474,995.39

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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.