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Finding the Fourth Proportional to 18,213.20, 27,319.80 and 16,600.40

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Solution

The fourth proportional to 18,213.20, 27,319.80 and 16,600.40 is: 24,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.20 : 27,319.80 = 16,600.40 : x
  2. Step 2: Convert to fraction form
    18,213.20/27,319.80 = 16,600.40/x
  3. Step 3: Cross multiply
    18,213.20x = 27,319.80 × 16,600.40
  4. Step 4: Simplify right side
    18,213.20x = 453,519,607.92
  5. Step 5: Solve for x
    x = 453,519,607.92/18,213.20
  6. Step 6: Final answer
    x = 24,900.60

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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.