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Finding the Third Proportional to 1,188 and 2,613

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Solution

The third proportional to 1,188 and 2,613 is: 5,747.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188 : 2,613 = 2,613 : x
  2. Step 2: Convert to fraction form
    1,188/2,613 = 2,613/x
  3. Step 3: Cross multiply
    1,188x = 2,613 × 2,613
  4. Step 4: Simplify right side
    1,188x = 6,827,769
  5. Step 5: Solve for x
    x = 6,827,769/1,188
  6. Step 6: Final answer
    x = 5,747.28

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.