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Finding the Fourth Proportional to 393,511.87, 587,198.71 and 351,100.41

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Solution

The fourth proportional to 393,511.87, 587,198.71 and 351,100.41 is: 523,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,511.87 : 587,198.71 = 351,100.41 : x
  2. Step 2: Convert to fraction form
    393,511.87/587,198.71 = 351,100.41/x
  3. Step 3: Cross multiply
    393,511.87x = 587,198.71 × 351,100.41
  4. Step 4: Simplify right side
    393,511.87x = 206,165,707,832.47
  5. Step 5: Solve for x
    x = 206,165,707,832.47/393,511.87
  6. Step 6: Final answer
    x = 523,912.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.