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Finding the Fourth Proportional to 4,940.54, 7,400.24 and 3,999.42

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Solution

The fourth proportional to 4,940.54, 7,400.24 and 3,999.42 is: 5,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940.54 : 7,400.24 = 3,999.42 : x
  2. Step 2: Convert to fraction form
    4,940.54/7,400.24 = 3,999.42/x
  3. Step 3: Cross multiply
    4,940.54x = 7,400.24 × 3,999.42
  4. Step 4: Simplify right side
    4,940.54x = 29,596,662.86
  5. Step 5: Solve for x
    x = 29,596,662.86/4,940.54
  6. Step 6: Final answer
    x = 5,990.57

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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.