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Finding the Fourth Proportional to 22,408.60, 30,857.17 and 21,911.33

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Solution

The fourth proportional to 22,408.60, 30,857.17 and 21,911.33 is: 30,172.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,408.60 : 30,857.17 = 21,911.33 : x
  2. Step 2: Convert to fraction form
    22,408.60/30,857.17 = 21,911.33/x
  3. Step 3: Cross multiply
    22,408.60x = 30,857.17 × 21,911.33
  4. Step 4: Simplify right side
    22,408.60x = 676,121,525.18
  5. Step 5: Solve for x
    x = 676,121,525.18/22,408.60
  6. Step 6: Final answer
    x = 30,172.42

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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.