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Finding the Third Proportional to 3,776 and 8,124

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Solution

The third proportional to 3,776 and 8,124 is: 17,478.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,776 : 8,124 = 8,124 : x
  2. Step 2: Convert to fraction form
    3,776/8,124 = 8,124/x
  3. Step 3: Cross multiply
    3,776x = 8,124 × 8,124
  4. Step 4: Simplify right side
    3,776x = 65,999,376
  5. Step 5: Solve for x
    x = 65,999,376/3,776
  6. Step 6: Final answer
    x = 17,478.65

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.