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Finding the Fourth Proportional to 19,905.36, 27,469.22 and 10,953.24

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Solution

The fourth proportional to 19,905.36, 27,469.22 and 10,953.24 is: 15,115.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.36 : 27,469.22 = 10,953.24 : x
  2. Step 2: Convert to fraction form
    19,905.36/27,469.22 = 10,953.24/x
  3. Step 3: Cross multiply
    19,905.36x = 27,469.22 × 10,953.24
  4. Step 4: Simplify right side
    19,905.36x = 300,876,959.27
  5. Step 5: Solve for x
    x = 300,876,959.27/19,905.36
  6. Step 6: Final answer
    x = 15,115.37

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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.