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Finding the Third Proportional to 21,691.50 and 33,357

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Solution

The third proportional to 21,691.50 and 33,357 is: 51,296.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.50 : 33,357 = 33,357 : x
  2. Step 2: Convert to fraction form
    21,691.50/33,357 = 33,357/x
  3. Step 3: Cross multiply
    21,691.50x = 33,357 × 33,357
  4. Step 4: Simplify right side
    21,691.50x = 1,112,689,449
  5. Step 5: Solve for x
    x = 1,112,689,449/21,691.50
  6. Step 6: Final answer
    x = 51,296.10

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.