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Finding the Third Proportional to 15,471 and 33,128

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Solution

The third proportional to 15,471 and 33,128 is: 70,936.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471 : 33,128 = 33,128 : x
  2. Step 2: Convert to fraction form
    15,471/33,128 = 33,128/x
  3. Step 3: Cross multiply
    15,471x = 33,128 × 33,128
  4. Step 4: Simplify right side
    15,471x = 1,097,464,384
  5. Step 5: Solve for x
    x = 1,097,464,384/15,471
  6. Step 6: Final answer
    x = 70,936.87

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.