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Finding the Fourth Proportional to 57,321.87, 85,980.49 and 29,241.31

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Solution

The fourth proportional to 57,321.87, 85,980.49 and 29,241.31 is: 43,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,321.87 : 85,980.49 = 29,241.31 : x
  2. Step 2: Convert to fraction form
    57,321.87/85,980.49 = 29,241.31/x
  3. Step 3: Cross multiply
    57,321.87x = 85,980.49 × 29,241.31
  4. Step 4: Simplify right side
    57,321.87x = 2,514,182,162.04
  5. Step 5: Solve for x
    x = 2,514,182,162.04/57,321.87
  6. Step 6: Final answer
    x = 43,860.78

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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.