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Finding the Third Proportional to 4,186 and 6,280

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Solution

The third proportional to 4,186 and 6,280 is: 9,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,186 : 6,280 = 6,280 : x
  2. Step 2: Convert to fraction form
    4,186/6,280 = 6,280/x
  3. Step 3: Cross multiply
    4,186x = 6,280 × 6,280
  4. Step 4: Simplify right side
    4,186x = 39,438,400
  5. Step 5: Solve for x
    x = 39,438,400/4,186
  6. Step 6: Final answer
    x = 9,421.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.