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Finding the Third Proportional to 4,202 and 8,194

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Solution

The third proportional to 4,202 and 8,194 is: 15,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,202 : 8,194 = 8,194 : x
  2. Step 2: Convert to fraction form
    4,202/8,194 = 8,194/x
  3. Step 3: Cross multiply
    4,202x = 8,194 × 8,194
  4. Step 4: Simplify right side
    4,202x = 67,141,636
  5. Step 5: Solve for x
    x = 67,141,636/4,202
  6. Step 6: Final answer
    x = 15,978.50

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.