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Finding the Third Proportional to 743 and 1,175

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Solution

The third proportional to 743 and 1,175 is: 1,858.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    743 : 1,175 = 1,175 : x
  2. Step 2: Convert to fraction form
    743/1,175 = 1,175/x
  3. Step 3: Cross multiply
    743x = 1,175 × 1,175
  4. Step 4: Simplify right side
    743x = 1,380,625
  5. Step 5: Solve for x
    x = 1,380,625/743
  6. Step 6: Final answer
    x = 1,858.18

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.