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Finding the Fourth Proportional to 681,658.95, 940,343.64 and 520,233.75

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Solution

The fourth proportional to 681,658.95, 940,343.64 and 520,233.75 is: 717,658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,658.95 : 940,343.64 = 520,233.75 : x
  2. Step 2: Convert to fraction form
    681,658.95/940,343.64 = 520,233.75/x
  3. Step 3: Cross multiply
    681,658.95x = 940,343.64 × 520,233.75
  4. Step 4: Simplify right side
    681,658.95x = 489,198,498,125.85
  5. Step 5: Solve for x
    x = 489,198,498,125.85/681,658.95
  6. Step 6: Final answer
    x = 717,658.73

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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.