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Finding the Third Proportional to 31,992 and 66,036

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Solution

The third proportional to 31,992 and 66,036 is: 136,307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,992 : 66,036 = 66,036 : x
  2. Step 2: Convert to fraction form
    31,992/66,036 = 66,036/x
  3. Step 3: Cross multiply
    31,992x = 66,036 × 66,036
  4. Step 4: Simplify right side
    31,992x = 4,360,753,296
  5. Step 5: Solve for x
    x = 4,360,753,296/31,992
  6. Step 6: Final answer
    x = 136,307.62

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.