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Finding the Third Proportional to 424 and 1,102

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Solution

The third proportional to 424 and 1,102 is: 2,864.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    424 : 1,102 = 1,102 : x
  2. Step 2: Convert to fraction form
    424/1,102 = 1,102/x
  3. Step 3: Cross multiply
    424x = 1,102 × 1,102
  4. Step 4: Simplify right side
    424x = 1,214,404
  5. Step 5: Solve for x
    x = 1,214,404/424
  6. Step 6: Final answer
    x = 2,864.16

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Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.