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Finding the Fourth Proportional to 22,163.60, 30,523.56 and 21,679.76

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Solution

The fourth proportional to 22,163.60, 30,523.56 and 21,679.76 is: 29,857.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,163.60 : 30,523.56 = 21,679.76 : x
  2. Step 2: Convert to fraction form
    22,163.60/30,523.56 = 21,679.76/x
  3. Step 3: Cross multiply
    22,163.60x = 30,523.56 × 21,679.76
  4. Step 4: Simplify right side
    22,163.60x = 661,743,455.15
  5. Step 5: Solve for x
    x = 661,743,455.15/22,163.60
  6. Step 6: Final answer
    x = 29,857.22

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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.