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Finding the Third Proportional to 1,186 and 1,842

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Solution

The third proportional to 1,186 and 1,842 is: 2,860.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186 : 1,842 = 1,842 : x
  2. Step 2: Convert to fraction form
    1,186/1,842 = 1,842/x
  3. Step 3: Cross multiply
    1,186x = 1,842 × 1,842
  4. Step 4: Simplify right side
    1,186x = 3,392,964
  5. Step 5: Solve for x
    x = 3,392,964/1,186
  6. Step 6: Final answer
    x = 2,860.85

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.