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Finding the Third Proportional to 4,132 and 7,640

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Solution

The third proportional to 4,132 and 7,640 is: 14,126.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,132 : 7,640 = 7,640 : x
  2. Step 2: Convert to fraction form
    4,132/7,640 = 7,640/x
  3. Step 3: Cross multiply
    4,132x = 7,640 × 7,640
  4. Step 4: Simplify right side
    4,132x = 58,369,600
  5. Step 5: Solve for x
    x = 58,369,600/4,132
  6. Step 6: Final answer
    x = 14,126.23

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Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.