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Finding the Fourth Proportional to 22,105.92, 30,536.01 and 20,531.28

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Solution

The fourth proportional to 22,105.92, 30,536.01 and 20,531.28 is: 28,360.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,105.92 : 30,536.01 = 20,531.28 : x
  2. Step 2: Convert to fraction form
    22,105.92/30,536.01 = 20,531.28/x
  3. Step 3: Cross multiply
    22,105.92x = 30,536.01 × 20,531.28
  4. Step 4: Simplify right side
    22,105.92x = 626,943,371.39
  5. Step 5: Solve for x
    x = 626,943,371.39/22,105.92
  6. Step 6: Final answer
    x = 28,360.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.