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Finding the Fourth Proportional to 69,400.41, 95,933.98 and 61,920.87

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Solution

The fourth proportional to 69,400.41, 95,933.98 and 61,920.87 is: 85,594.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,400.41 : 95,933.98 = 61,920.87 : x
  2. Step 2: Convert to fraction form
    69,400.41/95,933.98 = 61,920.87/x
  3. Step 3: Cross multiply
    69,400.41x = 95,933.98 × 61,920.87
  4. Step 4: Simplify right side
    69,400.41x = 5,940,315,194.56
  5. Step 5: Solve for x
    x = 5,940,315,194.56/69,400.41
  6. Step 6: Final answer
    x = 85,594.81

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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.