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Finding the Fourth Proportional to 11,077.73, 15,278.62 and 7,099.21

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Solution

The fourth proportional to 11,077.73, 15,278.62 and 7,099.21 is: 9,791.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,077.73 : 15,278.62 = 7,099.21 : x
  2. Step 2: Convert to fraction form
    11,077.73/15,278.62 = 7,099.21/x
  3. Step 3: Cross multiply
    11,077.73x = 15,278.62 × 7,099.21
  4. Step 4: Simplify right side
    11,077.73x = 108,466,131.89
  5. Step 5: Solve for x
    x = 108,466,131.89/11,077.73
  6. Step 6: Final answer
    x = 9,791.37

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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.