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Finding the Fourth Proportional to 5,399.78, 7,447.67 and 4,794.86

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Solution

The fourth proportional to 5,399.78, 7,447.67 and 4,794.86 is: 6,613.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.78 : 7,447.67 = 4,794.86 : x
  2. Step 2: Convert to fraction form
    5,399.78/7,447.67 = 4,794.86/x
  3. Step 3: Cross multiply
    5,399.78x = 7,447.67 × 4,794.86
  4. Step 4: Simplify right side
    5,399.78x = 35,710,521.27
  5. Step 5: Solve for x
    x = 35,710,521.27/5,399.78
  6. Step 6: Final answer
    x = 6,613.33

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