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Finding the Third Proportional to 5,220 and 5,368

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Solution

The third proportional to 5,220 and 5,368 is: 5,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220 : 5,368 = 5,368 : x
  2. Step 2: Convert to fraction form
    5,220/5,368 = 5,368/x
  3. Step 3: Cross multiply
    5,220x = 5,368 × 5,368
  4. Step 4: Simplify right side
    5,220x = 28,815,424
  5. Step 5: Solve for x
    x = 28,815,424/5,220
  6. Step 6: Final answer
    x = 5,520.20

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Why These Related Problems?

These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.