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Finding the Fourth Proportional to 57,791.80, 86,630.10 and 26,572.60

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Solution

The fourth proportional to 57,791.80, 86,630.10 and 26,572.60 is: 39,832.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,791.80 : 86,630.10 = 26,572.60 : x
  2. Step 2: Convert to fraction form
    57,791.80/86,630.10 = 26,572.60/x
  3. Step 3: Cross multiply
    57,791.80x = 86,630.10 × 26,572.60
  4. Step 4: Simplify right side
    57,791.80x = 2,301,986,995.26
  5. Step 5: Solve for x
    x = 2,301,986,995.26/57,791.80
  6. Step 6: Final answer
    x = 39,832.42

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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.