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Finding the Third Proportional to 19,885.50 and 27,873

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Solution

The third proportional to 19,885.50 and 27,873 is: 39,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.50 : 27,873 = 27,873 : x
  2. Step 2: Convert to fraction form
    19,885.50/27,873 = 27,873/x
  3. Step 3: Cross multiply
    19,885.50x = 27,873 × 27,873
  4. Step 4: Simplify right side
    19,885.50x = 776,904,129
  5. Step 5: Solve for x
    x = 776,904,129/19,885.50
  6. Step 6: Final answer
    x = 39,068.88

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.