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Finding the Fourth Proportional to 60,687.89, 91,044.84 and 21,246.29

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Solution

The fourth proportional to 60,687.89, 91,044.84 and 21,246.29 is: 31,873.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,687.89 : 91,044.84 = 21,246.29 : x
  2. Step 2: Convert to fraction form
    60,687.89/91,044.84 = 21,246.29/x
  3. Step 3: Cross multiply
    60,687.89x = 91,044.84 × 21,246.29
  4. Step 4: Simplify right side
    60,687.89x = 1,934,365,073.64
  5. Step 5: Solve for x
    x = 1,934,365,073.64/60,687.89
  6. Step 6: Final answer
    x = 31,873.99

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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.