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Finding the Third Proportional to 2,611 and 4,075

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Solution

The third proportional to 2,611 and 4,075 is: 6,359.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611 : 4,075 = 4,075 : x
  2. Step 2: Convert to fraction form
    2,611/4,075 = 4,075/x
  3. Step 3: Cross multiply
    2,611x = 4,075 × 4,075
  4. Step 4: Simplify right side
    2,611x = 16,605,625
  5. Step 5: Solve for x
    x = 16,605,625/2,611
  6. Step 6: Final answer
    x = 6,359.87

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.