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Finding the Fourth Proportional to 496,761.48, 745,195.28 and 212,481.45

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Solution

The fourth proportional to 496,761.48, 745,195.28 and 212,481.45 is: 318,744.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,761.48 : 745,195.28 = 212,481.45 : x
  2. Step 2: Convert to fraction form
    496,761.48/745,195.28 = 212,481.45/x
  3. Step 3: Cross multiply
    496,761.48x = 745,195.28 × 212,481.45
  4. Step 4: Simplify right side
    496,761.48x = 158,340,172,565.15
  5. Step 5: Solve for x
    x = 158,340,172,565.15/496,761.48
  6. Step 6: Final answer
    x = 318,744.87

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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.