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Finding the Third Proportional to 4,214.50 and 6,380

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Solution

The third proportional to 4,214.50 and 6,380 is: 9,658.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,214.50 : 6,380 = 6,380 : x
  2. Step 2: Convert to fraction form
    4,214.50/6,380 = 6,380/x
  3. Step 3: Cross multiply
    4,214.50x = 6,380 × 6,380
  4. Step 4: Simplify right side
    4,214.50x = 40,704,400
  5. Step 5: Solve for x
    x = 40,704,400/4,214.50
  6. Step 6: Final answer
    x = 9,658.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.