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Finding the Third Proportional to 923 and 1,229

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Solution

The third proportional to 923 and 1,229 is: 1,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    923 : 1,229 = 1,229 : x
  2. Step 2: Convert to fraction form
    923/1,229 = 1,229/x
  3. Step 3: Cross multiply
    923x = 1,229 × 1,229
  4. Step 4: Simplify right side
    923x = 1,510,441
  5. Step 5: Solve for x
    x = 1,510,441/923
  6. Step 6: Final answer
    x = 1,636.45

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.