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Finding the Third Proportional to 846 and 1,216

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Solution

The third proportional to 846 and 1,216 is: 1,747.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    846 : 1,216 = 1,216 : x
  2. Step 2: Convert to fraction form
    846/1,216 = 1,216/x
  3. Step 3: Cross multiply
    846x = 1,216 × 1,216
  4. Step 4: Simplify right side
    846x = 1,478,656
  5. Step 5: Solve for x
    x = 1,478,656/846
  6. Step 6: Final answer
    x = 1,747.82

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.