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Finding the Third Proportional to 772 and 995

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Solution

The third proportional to 772 and 995 is: 1,282.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    772 : 995 = 995 : x
  2. Step 2: Convert to fraction form
    772/995 = 995/x
  3. Step 3: Cross multiply
    772x = 995 × 995
  4. Step 4: Simplify right side
    772x = 990,025
  5. Step 5: Solve for x
    x = 990,025/772
  6. Step 6: Final answer
    x = 1,282.42

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.