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Finding the Third Proportional to 1,611 and 3,417

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Solution

The third proportional to 1,611 and 3,417 is: 7,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611 : 3,417 = 3,417 : x
  2. Step 2: Convert to fraction form
    1,611/3,417 = 3,417/x
  3. Step 3: Cross multiply
    1,611x = 3,417 × 3,417
  4. Step 4: Simplify right side
    1,611x = 11,675,889
  5. Step 5: Solve for x
    x = 11,675,889/1,611
  6. Step 6: Final answer
    x = 7,247.60

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.