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Finding the Fourth Proportional to 13,347.72, 18,422.10 and 8,042.94

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Solution

The fourth proportional to 13,347.72, 18,422.10 and 8,042.94 is: 11,100.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.72 : 18,422.10 = 8,042.94 : x
  2. Step 2: Convert to fraction form
    13,347.72/18,422.10 = 8,042.94/x
  3. Step 3: Cross multiply
    13,347.72x = 18,422.10 × 8,042.94
  4. Step 4: Simplify right side
    13,347.72x = 148,167,844.97
  5. Step 5: Solve for x
    x = 148,167,844.97/13,347.72
  6. Step 6: Final answer
    x = 11,100.61

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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.