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Finding the Third Proportional to 1,958 and 3,225

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Solution

The third proportional to 1,958 and 3,225 is: 5,311.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958 : 3,225 = 3,225 : x
  2. Step 2: Convert to fraction form
    1,958/3,225 = 3,225/x
  3. Step 3: Cross multiply
    1,958x = 3,225 × 3,225
  4. Step 4: Simplify right side
    1,958x = 10,400,625
  5. Step 5: Solve for x
    x = 10,400,625/1,958
  6. Step 6: Final answer
    x = 5,311.86

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.