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Finding the Fourth Proportional to 18,227.81, 27,279.99 and 11,212.29

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Solution

The fourth proportional to 18,227.81, 27,279.99 and 11,212.29 is: 16,780.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,227.81 : 27,279.99 = 11,212.29 : x
  2. Step 2: Convert to fraction form
    18,227.81/27,279.99 = 11,212.29/x
  3. Step 3: Cross multiply
    18,227.81x = 27,279.99 × 11,212.29
  4. Step 4: Simplify right side
    18,227.81x = 305,871,159.08
  5. Step 5: Solve for x
    x = 305,871,159.08/18,227.81
  6. Step 6: Final answer
    x = 16,780.46

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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.