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Finding the Fourth Proportional to 22,402.20, 33,615.45 and 9,255.90

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Solution

The fourth proportional to 22,402.20, 33,615.45 and 9,255.90 is: 13,888.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,402.20 : 33,615.45 = 9,255.90 : x
  2. Step 2: Convert to fraction form
    22,402.20/33,615.45 = 9,255.90/x
  3. Step 3: Cross multiply
    22,402.20x = 33,615.45 × 9,255.90
  4. Step 4: Simplify right side
    22,402.20x = 311,141,243.66
  5. Step 5: Solve for x
    x = 311,141,243.66/22,402.20
  6. Step 6: Final answer
    x = 13,888.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.