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Finding the Third Proportional to 1,161 and 2,668.50

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Solution

The third proportional to 1,161 and 2,668.50 is: 6,133.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161 : 2,668.50 = 2,668.50 : x
  2. Step 2: Convert to fraction form
    1,161/2,668.50 = 2,668.50/x
  3. Step 3: Cross multiply
    1,161x = 2,668.50 × 2,668.50
  4. Step 4: Simplify right side
    1,161x = 7,120,892.25
  5. Step 5: Solve for x
    x = 7,120,892.25/1,161
  6. Step 6: Final answer
    x = 6,133.41

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.