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Finding the Fourth Proportional to 681,187, 940,067.24 and 379,381

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Solution

The fourth proportional to 681,187, 940,067.24 and 379,381 is: 523,562.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,187 : 940,067.24 = 379,381 : x
  2. Step 2: Convert to fraction form
    681,187/940,067.24 = 379,381/x
  3. Step 3: Cross multiply
    681,187x = 940,067.24 × 379,381
  4. Step 4: Simplify right side
    681,187x = 356,643,649,578.44
  5. Step 5: Solve for x
    x = 356,643,649,578.44/681,187
  6. Step 6: Final answer
    x = 523,562.03

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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.