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Finding the Fourth Proportional to 439,166.44, 605,715.24 and 378,016.66

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Solution

The fourth proportional to 439,166.44, 605,715.24 and 378,016.66 is: 521,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,166.44 : 605,715.24 = 378,016.66 : x
  2. Step 2: Convert to fraction form
    439,166.44/605,715.24 = 378,016.66/x
  3. Step 3: Cross multiply
    439,166.44x = 605,715.24 × 378,016.66
  4. Step 4: Simplify right side
    439,166.44x = 228,970,451,935.90
  5. Step 5: Solve for x
    x = 228,970,451,935.90/439,166.44
  6. Step 6: Final answer
    x = 521,375.11

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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.