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Finding the Third Proportional to 669 and 968.25

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Solution

The third proportional to 669 and 968.25 is: 1,401.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    669 : 968.25 = 968.25 : x
  2. Step 2: Convert to fraction form
    669/968.25 = 968.25/x
  3. Step 3: Cross multiply
    669x = 968.25 × 968.25
  4. Step 4: Simplify right side
    669x = 937,508.06
  5. Step 5: Solve for x
    x = 937,508.06/669
  6. Step 6: Final answer
    x = 1,401.36

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.