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Finding the Fourth Proportional to 62,851.96, 94,257.90 and 20,724.20

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Solution

The fourth proportional to 62,851.96, 94,257.90 and 20,724.20 is: 31,079.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,851.96 : 94,257.90 = 20,724.20 : x
  2. Step 2: Convert to fraction form
    62,851.96/94,257.90 = 20,724.20/x
  3. Step 3: Cross multiply
    62,851.96x = 94,257.90 × 20,724.20
  4. Step 4: Simplify right side
    62,851.96x = 1,953,419,571.18
  5. Step 5: Solve for x
    x = 1,953,419,571.18/62,851.96
  6. Step 6: Final answer
    x = 31,079.69

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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.