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Finding the Fourth Proportional to 73,543.28, 110,805.60 and 66,531.11

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Solution

The fourth proportional to 73,543.28, 110,805.60 and 66,531.11 is: 100,240.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,543.28 : 110,805.60 = 66,531.11 : x
  2. Step 2: Convert to fraction form
    73,543.28/110,805.60 = 66,531.11/x
  3. Step 3: Cross multiply
    73,543.28x = 110,805.60 × 66,531.11
  4. Step 4: Simplify right side
    73,543.28x = 7,372,019,257.68
  5. Step 5: Solve for x
    x = 7,372,019,257.68/73,543.28
  6. Step 6: Final answer
    x = 100,240.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.