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Finding the Fourth Proportional to 57,963.48, 86,961.72 and 18,523.68

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Solution

The fourth proportional to 57,963.48, 86,961.72 and 18,523.68 is: 27,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,963.48 : 86,961.72 = 18,523.68 : x
  2. Step 2: Convert to fraction form
    57,963.48/86,961.72 = 18,523.68/x
  3. Step 3: Cross multiply
    57,963.48x = 86,961.72 × 18,523.68
  4. Step 4: Simplify right side
    57,963.48x = 1,610,851,073.53
  5. Step 5: Solve for x
    x = 1,610,851,073.53/57,963.48
  6. Step 6: Final answer
    x = 27,790.79

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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.