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Finding the Third Proportional to 975 and 1,755

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Solution

The third proportional to 975 and 1,755 is: 3,159

Step by Step Solution

  1. Step 1: Write the proportion equation
    975 : 1,755 = 1,755 : x
  2. Step 2: Convert to fraction form
    975/1,755 = 1,755/x
  3. Step 3: Cross multiply
    975x = 1,755 × 1,755
  4. Step 4: Simplify right side
    975x = 3,080,025
  5. Step 5: Solve for x
    x = 3,080,025/975
  6. Step 6: Final answer
    x = 3,159

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.