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Finding the Fourth Proportional to 57,943.98, 86,866.56 and 55,188.36

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Solution

The fourth proportional to 57,943.98, 86,866.56 and 55,188.36 is: 82,735.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,943.98 : 86,866.56 = 55,188.36 : x
  2. Step 2: Convert to fraction form
    57,943.98/86,866.56 = 55,188.36/x
  3. Step 3: Cross multiply
    57,943.98x = 86,866.56 × 55,188.36
  4. Step 4: Simplify right side
    57,943.98x = 4,794,022,985.24
  5. Step 5: Solve for x
    x = 4,794,022,985.24/57,943.98
  6. Step 6: Final answer
    x = 82,735.48

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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.