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Finding the Fourth Proportional to 19,891.22, 27,450.08 and 10,938.79

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Solution

The fourth proportional to 19,891.22, 27,450.08 and 10,938.79 is: 15,095.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.22 : 27,450.08 = 10,938.79 : x
  2. Step 2: Convert to fraction form
    19,891.22/27,450.08 = 10,938.79/x
  3. Step 3: Cross multiply
    19,891.22x = 27,450.08 × 10,938.79
  4. Step 4: Simplify right side
    19,891.22x = 300,270,468.66
  5. Step 5: Solve for x
    x = 300,270,468.66/19,891.22
  6. Step 6: Final answer
    x = 15,095.63

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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.