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Finding the Third Proportional to 14,074.50 and 30,939

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Solution

The third proportional to 14,074.50 and 30,939 is: 68,011.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,074.50 : 30,939 = 30,939 : x
  2. Step 2: Convert to fraction form
    14,074.50/30,939 = 30,939/x
  3. Step 3: Cross multiply
    14,074.50x = 30,939 × 30,939
  4. Step 4: Simplify right side
    14,074.50x = 957,221,721
  5. Step 5: Solve for x
    x = 957,221,721/14,074.50
  6. Step 6: Final answer
    x = 68,011.06

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.