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Finding the Fourth Proportional to 65,951.95, 98,940.22 and 21,581.13

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Solution

The fourth proportional to 65,951.95, 98,940.22 and 21,581.13 is: 32,375.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,951.95 : 98,940.22 = 21,581.13 : x
  2. Step 2: Convert to fraction form
    65,951.95/98,940.22 = 21,581.13/x
  3. Step 3: Cross multiply
    65,951.95x = 98,940.22 × 21,581.13
  4. Step 4: Simplify right side
    65,951.95x = 2,135,242,158.17
  5. Step 5: Solve for x
    x = 2,135,242,158.17/65,951.95
  6. Step 6: Final answer
    x = 32,375.73

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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.