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Finding the Third Proportional to 1,144 and 1,216

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Solution

The third proportional to 1,144 and 1,216 is: 1,292.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144 : 1,216 = 1,216 : x
  2. Step 2: Convert to fraction form
    1,144/1,216 = 1,216/x
  3. Step 3: Cross multiply
    1,144x = 1,216 × 1,216
  4. Step 4: Simplify right side
    1,144x = 1,478,656
  5. Step 5: Solve for x
    x = 1,478,656/1,144
  6. Step 6: Final answer
    x = 1,292.53

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Why These Related Problems?

These problems maintain the same ratio (1.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.