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Finding the Fourth Proportional to 8,611.62, 11,883.69 and 5,074.98

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Solution

The fourth proportional to 8,611.62, 11,883.69 and 5,074.98 is: 7,003.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.62 : 11,883.69 = 5,074.98 : x
  2. Step 2: Convert to fraction form
    8,611.62/11,883.69 = 5,074.98/x
  3. Step 3: Cross multiply
    8,611.62x = 11,883.69 × 5,074.98
  4. Step 4: Simplify right side
    8,611.62x = 60,309,489.08
  5. Step 5: Solve for x
    x = 60,309,489.08/8,611.62
  6. Step 6: Final answer
    x = 7,003.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.