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Finding the Third Proportional to 7,718.50 and 16,847

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Solution

The third proportional to 7,718.50 and 16,847 is: 36,771.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.50 : 16,847 = 16,847 : x
  2. Step 2: Convert to fraction form
    7,718.50/16,847 = 16,847/x
  3. Step 3: Cross multiply
    7,718.50x = 16,847 × 16,847
  4. Step 4: Simplify right side
    7,718.50x = 283,821,409
  5. Step 5: Solve for x
    x = 283,821,409/7,718.50
  6. Step 6: Final answer
    x = 36,771.58

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.