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Finding the Fourth Proportional to 496,736.80, 745,105.20 and 437,687.80

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Solution

The fourth proportional to 496,736.80, 745,105.20 and 437,687.80 is: 656,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,736.80 : 745,105.20 = 437,687.80 : x
  2. Step 2: Convert to fraction form
    496,736.80/745,105.20 = 437,687.80/x
  3. Step 3: Cross multiply
    496,736.80x = 745,105.20 × 437,687.80
  4. Step 4: Simplify right side
    496,736.80x = 326,123,455,756.56
  5. Step 5: Solve for x
    x = 326,123,455,756.56/496,736.80
  6. Step 6: Final answer
    x = 656,531.70

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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.