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Finding the Third Proportional to 963 and 1,878

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Solution

The third proportional to 963 and 1,878 is: 3,662.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    963 : 1,878 = 1,878 : x
  2. Step 2: Convert to fraction form
    963/1,878 = 1,878/x
  3. Step 3: Cross multiply
    963x = 1,878 × 1,878
  4. Step 4: Simplify right side
    963x = 3,526,884
  5. Step 5: Solve for x
    x = 3,526,884/963
  6. Step 6: Final answer
    x = 3,662.39

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.