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Finding the Third Proportional to 432 and 929

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Solution

The third proportional to 432 and 929 is: 1,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    432 : 929 = 929 : x
  2. Step 2: Convert to fraction form
    432/929 = 929/x
  3. Step 3: Cross multiply
    432x = 929 × 929
  4. Step 4: Simplify right side
    432x = 863,041
  5. Step 5: Solve for x
    x = 863,041/432
  6. Step 6: Final answer
    x = 1,997.78

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.