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Finding the Third Proportional to 2,161.69 and 2,936.25

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Solution

The third proportional to 2,161.69 and 2,936.25 is: 3,988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.69 : 2,936.25 = 2,936.25 : x
  2. Step 2: Convert to fraction form
    2,161.69/2,936.25 = 2,936.25/x
  3. Step 3: Cross multiply
    2,161.69x = 2,936.25 × 2,936.25
  4. Step 4: Simplify right side
    2,161.69x = 8,621,564.06
  5. Step 5: Solve for x
    x = 8,621,564.06/2,161.69
  6. Step 6: Final answer
    x = 3,988.35

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.