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Finding the Third Proportional to 31,212.75 and 45,651

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Solution

The third proportional to 31,212.75 and 45,651 is: 66,768.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,212.75 : 45,651 = 45,651 : x
  2. Step 2: Convert to fraction form
    31,212.75/45,651 = 45,651/x
  3. Step 3: Cross multiply
    31,212.75x = 45,651 × 45,651
  4. Step 4: Simplify right side
    31,212.75x = 2,084,013,801
  5. Step 5: Solve for x
    x = 2,084,013,801/31,212.75
  6. Step 6: Final answer
    x = 66,768.03

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.