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Finding the Fourth Proportional to 555,917.87, 834,992.78 and 331,715.94

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Solution

The fourth proportional to 555,917.87, 834,992.78 and 331,715.94 is: 498,239.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,917.87 : 834,992.78 = 331,715.94 : x
  2. Step 2: Convert to fraction form
    555,917.87/834,992.78 = 331,715.94/x
  3. Step 3: Cross multiply
    555,917.87x = 834,992.78 × 331,715.94
  4. Step 4: Simplify right side
    555,917.87x = 276,980,414,910.91
  5. Step 5: Solve for x
    x = 276,980,414,910.91/555,917.87
  6. Step 6: Final answer
    x = 498,239.81

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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.