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Finding the Third Proportional to 15,387.38 and 33,128.44

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Solution

The third proportional to 15,387.38 and 33,128.44 is: 71,324.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.38 : 33,128.44 = 33,128.44 : x
  2. Step 2: Convert to fraction form
    15,387.38/33,128.44 = 33,128.44/x
  3. Step 3: Cross multiply
    15,387.38x = 33,128.44 × 33,128.44
  4. Step 4: Simplify right side
    15,387.38x = 1,097,493,371.19
  5. Step 5: Solve for x
    x = 1,097,493,371.19/15,387.38
  6. Step 6: Final answer
    x = 71,324.28

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.