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Finding the Fourth Proportional to 7,221.96, 10,835.37 and 3,061.80

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Solution

The fourth proportional to 7,221.96, 10,835.37 and 3,061.80 is: 4,593.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.96 : 10,835.37 = 3,061.80 : x
  2. Step 2: Convert to fraction form
    7,221.96/10,835.37 = 3,061.80/x
  3. Step 3: Cross multiply
    7,221.96x = 10,835.37 × 3,061.80
  4. Step 4: Simplify right side
    7,221.96x = 33,175,735.87
  5. Step 5: Solve for x
    x = 33,175,735.87/7,221.96
  6. Step 6: Final answer
    x = 4,593.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.