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Finding the Third Proportional to 3,231.56 and 4,991.06

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Solution

The third proportional to 3,231.56 and 4,991.06 is: 7,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.56 : 4,991.06 = 4,991.06 : x
  2. Step 2: Convert to fraction form
    3,231.56/4,991.06 = 4,991.06/x
  3. Step 3: Cross multiply
    3,231.56x = 4,991.06 × 4,991.06
  4. Step 4: Simplify right side
    3,231.56x = 24,910,704.88
  5. Step 5: Solve for x
    x = 24,910,704.88/3,231.56
  6. Step 6: Final answer
    x = 7,708.56

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.