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Finding the Fourth Proportional to 667,094.85, 920,591.46 and 361,171.49

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Solution

The fourth proportional to 667,094.85, 920,591.46 and 361,171.49 is: 498,416.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,094.85 : 920,591.46 = 361,171.49 : x
  2. Step 2: Convert to fraction form
    667,094.85/920,591.46 = 361,171.49/x
  3. Step 3: Cross multiply
    667,094.85x = 920,591.46 × 361,171.49
  4. Step 4: Simplify right side
    667,094.85x = 332,491,384,686.52
  5. Step 5: Solve for x
    x = 332,491,384,686.52/667,094.85
  6. Step 6: Final answer
    x = 498,416.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.