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Finding the Third Proportional to 1,161.75 and 2,421

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Solution

The third proportional to 1,161.75 and 2,421 is: 5,045.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.75 : 2,421 = 2,421 : x
  2. Step 2: Convert to fraction form
    1,161.75/2,421 = 2,421/x
  3. Step 3: Cross multiply
    1,161.75x = 2,421 × 2,421
  4. Step 4: Simplify right side
    1,161.75x = 5,861,241
  5. Step 5: Solve for x
    x = 5,861,241/1,161.75
  6. Step 6: Final answer
    x = 5,045.18

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.