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Finding the Fourth Proportional to 7,993.12, 11,991.58 and 3,610.58

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Solution

The fourth proportional to 7,993.12, 11,991.58 and 3,610.58 is: 5,416.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993.12 : 11,991.58 = 3,610.58 : x
  2. Step 2: Convert to fraction form
    7,993.12/11,991.58 = 3,610.58/x
  3. Step 3: Cross multiply
    7,993.12x = 11,991.58 × 3,610.58
  4. Step 4: Simplify right side
    7,993.12x = 43,296,558.92
  5. Step 5: Solve for x
    x = 43,296,558.92/7,993.12
  6. Step 6: Final answer
    x = 5,416.73

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1.5x scale

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.