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Finding the Third Proportional to 5,611.50 and 7,641

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Solution

The third proportional to 5,611.50 and 7,641 is: 10,404.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.50 : 7,641 = 7,641 : x
  2. Step 2: Convert to fraction form
    5,611.50/7,641 = 7,641/x
  3. Step 3: Cross multiply
    5,611.50x = 7,641 × 7,641
  4. Step 4: Simplify right side
    5,611.50x = 58,384,881
  5. Step 5: Solve for x
    x = 58,384,881/5,611.50
  6. Step 6: Final answer
    x = 10,404.51

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.