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Finding the Third Proportional to 18,556.50 and 38,022

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Solution

The third proportional to 18,556.50 and 38,022 is: 77,906.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.50 : 38,022 = 38,022 : x
  2. Step 2: Convert to fraction form
    18,556.50/38,022 = 38,022/x
  3. Step 3: Cross multiply
    18,556.50x = 38,022 × 38,022
  4. Step 4: Simplify right side
    18,556.50x = 1,445,672,484
  5. Step 5: Solve for x
    x = 1,445,672,484/18,556.50
  6. Step 6: Final answer
    x = 77,906.53

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.