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Finding the Fourth Proportional to 681,195.44, 940,078.92 and 379,389.44

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Solution

The fourth proportional to 681,195.44, 940,078.92 and 379,389.44 is: 523,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,195.44 : 940,078.92 = 379,389.44 : x
  2. Step 2: Convert to fraction form
    681,195.44/940,078.92 = 379,389.44/x
  3. Step 3: Cross multiply
    681,195.44x = 940,078.92 × 379,389.44
  4. Step 4: Simplify right side
    681,195.44x = 356,656,015,014.61
  5. Step 5: Solve for x
    x = 356,656,015,014.61/681,195.44
  6. Step 6: Final answer
    x = 523,573.70

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1.5x scale

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.