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Finding the Third Proportional to 1,186 and 2,586

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Solution

The third proportional to 1,186 and 2,586 is: 5,638.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186 : 2,586 = 2,586 : x
  2. Step 2: Convert to fraction form
    1,186/2,586 = 2,586/x
  3. Step 3: Cross multiply
    1,186x = 2,586 × 2,586
  4. Step 4: Simplify right side
    1,186x = 6,687,396
  5. Step 5: Solve for x
    x = 6,687,396/1,186
  6. Step 6: Final answer
    x = 5,638.61

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.