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Finding the Fourth Proportional to 4,789.80, 7,176.42 and 3,396.33

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Solution

The fourth proportional to 4,789.80, 7,176.42 and 3,396.33 is: 5,088.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.80 : 7,176.42 = 3,396.33 : x
  2. Step 2: Convert to fraction form
    4,789.80/7,176.42 = 3,396.33/x
  3. Step 3: Cross multiply
    4,789.80x = 7,176.42 × 3,396.33
  4. Step 4: Simplify right side
    4,789.80x = 24,373,490.54
  5. Step 5: Solve for x
    x = 24,373,490.54/4,789.80
  6. Step 6: Final answer
    x = 5,088.62

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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.