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Finding the Third Proportional to 19,511 and 27,882

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Solution

The third proportional to 19,511 and 27,882 is: 39,844.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511 : 27,882 = 27,882 : x
  2. Step 2: Convert to fraction form
    19,511/27,882 = 27,882/x
  3. Step 3: Cross multiply
    19,511x = 27,882 × 27,882
  4. Step 4: Simplify right side
    19,511x = 777,405,924
  5. Step 5: Solve for x
    x = 777,405,924/19,511
  6. Step 6: Final answer
    x = 39,844.49

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.