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Finding the Fourth Proportional to 8,093.80, 11,171.17 and 5,439.67

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Solution

The fourth proportional to 8,093.80, 11,171.17 and 5,439.67 is: 7,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,093.80 : 11,171.17 = 5,439.67 : x
  2. Step 2: Convert to fraction form
    8,093.80/11,171.17 = 5,439.67/x
  3. Step 3: Cross multiply
    8,093.80x = 11,171.17 × 5,439.67
  4. Step 4: Simplify right side
    8,093.80x = 60,767,478.31
  5. Step 5: Solve for x
    x = 60,767,478.31/8,093.80
  6. Step 6: Final answer
    x = 7,507.90

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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.