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Finding the Fourth Proportional to 22,115.43, 30,523.77 and 13,621.77

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Solution

The fourth proportional to 22,115.43, 30,523.77 and 13,621.77 is: 18,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.43 : 30,523.77 = 13,621.77 : x
  2. Step 2: Convert to fraction form
    22,115.43/30,523.77 = 13,621.77/x
  3. Step 3: Cross multiply
    22,115.43x = 30,523.77 × 13,621.77
  4. Step 4: Simplify right side
    22,115.43x = 415,787,774.47
  5. Step 5: Solve for x
    x = 415,787,774.47/22,115.43
  6. Step 6: Final answer
    x = 18,800.80

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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.