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Finding the Third Proportional to 3,955 and 6,172

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Solution

The third proportional to 3,955 and 6,172 is: 9,631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955 : 6,172 = 6,172 : x
  2. Step 2: Convert to fraction form
    3,955/6,172 = 6,172/x
  3. Step 3: Cross multiply
    3,955x = 6,172 × 6,172
  4. Step 4: Simplify right side
    3,955x = 38,093,584
  5. Step 5: Solve for x
    x = 38,093,584/3,955
  6. Step 6: Final answer
    x = 9,631.75

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.