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Finding the Fourth Proportional to 171,610.80, 257,425.98 and 57,712.88

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Solution

The fourth proportional to 171,610.80, 257,425.98 and 57,712.88 is: 86,572.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,610.80 : 257,425.98 = 57,712.88 : x
  2. Step 2: Convert to fraction form
    171,610.80/257,425.98 = 57,712.88/x
  3. Step 3: Cross multiply
    171,610.80x = 257,425.98 × 57,712.88
  4. Step 4: Simplify right side
    171,610.80x = 14,856,794,692.62
  5. Step 5: Solve for x
    x = 14,856,794,692.62/171,610.80
  6. Step 6: Final answer
    x = 86,572.61

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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.