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Finding the Fourth Proportional to 57,879.44, 86,759.97 and 39,161.46

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Solution

The fourth proportional to 57,879.44, 86,759.97 and 39,161.46 is: 58,702.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,879.44 : 86,759.97 = 39,161.46 : x
  2. Step 2: Convert to fraction form
    57,879.44/86,759.97 = 39,161.46/x
  3. Step 3: Cross multiply
    57,879.44x = 86,759.97 × 39,161.46
  4. Step 4: Simplify right side
    57,879.44x = 3,397,646,895.37
  5. Step 5: Solve for x
    x = 3,397,646,895.37/57,879.44
  6. Step 6: Final answer
    x = 58,702.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.