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Finding the Fourth Proportional to 644,367.86, 888,493.96 and 411,481.11

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Solution

The fourth proportional to 644,367.86, 888,493.96 and 411,481.11 is: 567,375.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,367.86 : 888,493.96 = 411,481.11 : x
  2. Step 2: Convert to fraction form
    644,367.86/888,493.96 = 411,481.11/x
  3. Step 3: Cross multiply
    644,367.86x = 888,493.96 × 411,481.11
  4. Step 4: Simplify right side
    644,367.86x = 365,598,484,735.30
  5. Step 5: Solve for x
    x = 365,598,484,735.30/644,367.86
  6. Step 6: Final answer
    x = 567,375.42

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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.