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Finding the Third Proportional to 31,825.50 and 66,267

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Solution

The third proportional to 31,825.50 and 66,267 is: 137,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,825.50 : 66,267 = 66,267 : x
  2. Step 2: Convert to fraction form
    31,825.50/66,267 = 66,267/x
  3. Step 3: Cross multiply
    31,825.50x = 66,267 × 66,267
  4. Step 4: Simplify right side
    31,825.50x = 4,391,315,289
  5. Step 5: Solve for x
    x = 4,391,315,289/31,825.50
  6. Step 6: Final answer
    x = 137,981.03

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.