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Finding the Third Proportional to 7,611 and 12,226.50

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Solution

The third proportional to 7,611 and 12,226.50 is: 19,640.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,611 : 12,226.50 = 12,226.50 : x
  2. Step 2: Convert to fraction form
    7,611/12,226.50 = 12,226.50/x
  3. Step 3: Cross multiply
    7,611x = 12,226.50 × 12,226.50
  4. Step 4: Simplify right side
    7,611x = 149,487,302.25
  5. Step 5: Solve for x
    x = 149,487,302.25/7,611
  6. Step 6: Final answer
    x = 19,640.95

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.