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Finding the Fourth Proportional to 67,371.73, 101,057.60 and 20,618.53

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Solution

The fourth proportional to 67,371.73, 101,057.60 and 20,618.53 is: 30,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,371.73 : 101,057.60 = 20,618.53 : x
  2. Step 2: Convert to fraction form
    67,371.73/101,057.60 = 20,618.53/x
  3. Step 3: Cross multiply
    67,371.73x = 101,057.60 × 20,618.53
  4. Step 4: Simplify right side
    67,371.73x = 2,083,659,157.33
  5. Step 5: Solve for x
    x = 2,083,659,157.33/67,371.73
  6. Step 6: Final answer
    x = 30,927.80

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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.