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Finding the Third Proportional to 3,416 and 4,172

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Solution

The third proportional to 3,416 and 4,172 is: 5,095.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,416 : 4,172 = 4,172 : x
  2. Step 2: Convert to fraction form
    3,416/4,172 = 4,172/x
  3. Step 3: Cross multiply
    3,416x = 4,172 × 4,172
  4. Step 4: Simplify right side
    3,416x = 17,405,584
  5. Step 5: Solve for x
    x = 17,405,584/3,416
  6. Step 6: Final answer
    x = 5,095.31

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.