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Finding the Third Proportional to 18,103.50 and 38,961

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Solution

The third proportional to 18,103.50 and 38,961 is: 83,848.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.50 : 38,961 = 38,961 : x
  2. Step 2: Convert to fraction form
    18,103.50/38,961 = 38,961/x
  3. Step 3: Cross multiply
    18,103.50x = 38,961 × 38,961
  4. Step 4: Simplify right side
    18,103.50x = 1,517,959,521
  5. Step 5: Solve for x
    x = 1,517,959,521/18,103.50
  6. Step 6: Final answer
    x = 83,848.95

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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.