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Finding the Third Proportional to 18,078.75 and 38,933.25

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Solution

The third proportional to 18,078.75 and 38,933.25 is: 83,844.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,078.75 : 38,933.25 = 38,933.25 : x
  2. Step 2: Convert to fraction form
    18,078.75/38,933.25 = 38,933.25/x
  3. Step 3: Cross multiply
    18,078.75x = 38,933.25 × 38,933.25
  4. Step 4: Simplify right side
    18,078.75x = 1,515,797,955.56
  5. Step 5: Solve for x
    x = 1,515,797,955.56/18,078.75
  6. Step 6: Final answer
    x = 83,844.18

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.