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Finding the Fourth Proportional to 57,893.98, 86,791.74 and 55,138.36

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Solution

The fourth proportional to 57,893.98, 86,791.74 and 55,138.36 is: 82,660.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,893.98 : 86,791.74 = 55,138.36 : x
  2. Step 2: Convert to fraction form
    57,893.98/86,791.74 = 55,138.36/x
  3. Step 3: Cross multiply
    57,893.98x = 86,791.74 × 55,138.36
  4. Step 4: Simplify right side
    57,893.98x = 4,785,554,205.15
  5. Step 5: Solve for x
    x = 4,785,554,205.15/57,893.98
  6. Step 6: Final answer
    x = 82,660.65

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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.