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Finding the Third Proportional to 4,480 and 4,960

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Solution

The third proportional to 4,480 and 4,960 is: 5,491.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,480 : 4,960 = 4,960 : x
  2. Step 2: Convert to fraction form
    4,480/4,960 = 4,960/x
  3. Step 3: Cross multiply
    4,480x = 4,960 × 4,960
  4. Step 4: Simplify right side
    4,480x = 24,601,600
  5. Step 5: Solve for x
    x = 24,601,600/4,480
  6. Step 6: Final answer
    x = 5,491.43

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.