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Finding the Third Proportional to 2,921 and 4,173

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Solution

The third proportional to 2,921 and 4,173 is: 5,961.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921 : 4,173 = 4,173 : x
  2. Step 2: Convert to fraction form
    2,921/4,173 = 4,173/x
  3. Step 3: Cross multiply
    2,921x = 4,173 × 4,173
  4. Step 4: Simplify right side
    2,921x = 17,413,929
  5. Step 5: Solve for x
    x = 17,413,929/2,921
  6. Step 6: Final answer
    x = 5,961.63

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.