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Finding the Fourth Proportional to 57,871.66, 86,815.56 and 17,893.91

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Solution

The fourth proportional to 57,871.66, 86,815.56 and 17,893.91 is: 26,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,871.66 : 86,815.56 = 17,893.91 : x
  2. Step 2: Convert to fraction form
    57,871.66/86,815.56 = 17,893.91/x
  3. Step 3: Cross multiply
    57,871.66x = 86,815.56 × 17,893.91
  4. Step 4: Simplify right side
    57,871.66x = 1,553,469,383.16
  5. Step 5: Solve for x
    x = 1,553,469,383.16/57,871.66
  6. Step 6: Final answer
    x = 26,843.35

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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.