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Finding the Fourth Proportional to 13,707.27, 18,912.99 and 8,042.31

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Solution

The fourth proportional to 13,707.27, 18,912.99 and 8,042.31 is: 11,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.27 : 18,912.99 = 8,042.31 : x
  2. Step 2: Convert to fraction form
    13,707.27/18,912.99 = 8,042.31/x
  3. Step 3: Cross multiply
    13,707.27x = 18,912.99 × 8,042.31
  4. Step 4: Simplify right side
    13,707.27x = 152,104,128.61
  5. Step 5: Solve for x
    x = 152,104,128.61/13,707.27
  6. Step 6: Final answer
    x = 11,096.60

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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.