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Finding the Fourth Proportional to 19,481.90, 26,885.31 and 11,098.22

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Solution

The fourth proportional to 19,481.90, 26,885.31 and 11,098.22 is: 15,315.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,481.90 : 26,885.31 = 11,098.22 : x
  2. Step 2: Convert to fraction form
    19,481.90/26,885.31 = 11,098.22/x
  3. Step 3: Cross multiply
    19,481.90x = 26,885.31 × 11,098.22
  4. Step 4: Simplify right side
    19,481.90x = 298,379,085.15
  5. Step 5: Solve for x
    x = 298,379,085.15/19,481.90
  6. Step 6: Final answer
    x = 15,315.71

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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.