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Finding the Fourth Proportional to 7,179.87, 9,908.96 and 4,196.67

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Solution

The fourth proportional to 7,179.87, 9,908.96 and 4,196.67 is: 5,791.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.87 : 9,908.96 = 4,196.67 : x
  2. Step 2: Convert to fraction form
    7,179.87/9,908.96 = 4,196.67/x
  3. Step 3: Cross multiply
    7,179.87x = 9,908.96 × 4,196.67
  4. Step 4: Simplify right side
    7,179.87x = 41,584,614.18
  5. Step 5: Solve for x
    x = 41,584,614.18/7,179.87
  6. Step 6: Final answer
    x = 5,791.83

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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.