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Finding the Third Proportional to 5,512 and 7,472

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Solution

The third proportional to 5,512 and 7,472 is: 10,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,512 : 7,472 = 7,472 : x
  2. Step 2: Convert to fraction form
    5,512/7,472 = 7,472/x
  3. Step 3: Cross multiply
    5,512x = 7,472 × 7,472
  4. Step 4: Simplify right side
    5,512x = 55,830,784
  5. Step 5: Solve for x
    x = 55,830,784/5,512
  6. Step 6: Final answer
    x = 10,128.95

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.