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Finding the Fourth Proportional to 13,729.01, 18,942.81 and 8,063.42

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Solution

The fourth proportional to 13,729.01, 18,942.81 and 8,063.42 is: 11,125.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.01 : 18,942.81 = 8,063.42 : x
  2. Step 2: Convert to fraction form
    13,729.01/18,942.81 = 8,063.42/x
  3. Step 3: Cross multiply
    13,729.01x = 18,942.81 × 8,063.42
  4. Step 4: Simplify right side
    13,729.01x = 152,743,833.01
  5. Step 5: Solve for x
    x = 152,743,833.01/13,729.01
  6. Step 6: Final answer
    x = 11,125.63

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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.