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Finding the Third Proportional to 5,280 and 6,200

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Solution

The third proportional to 5,280 and 6,200 is: 7,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280 : 6,200 = 6,200 : x
  2. Step 2: Convert to fraction form
    5,280/6,200 = 6,200/x
  3. Step 3: Cross multiply
    5,280x = 6,200 × 6,200
  4. Step 4: Simplify right side
    5,280x = 38,440,000
  5. Step 5: Solve for x
    x = 38,440,000/5,280
  6. Step 6: Final answer
    x = 7,280.30

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Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.