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Finding the Fourth Proportional to 3,899.99, 5,851.74 and 2,438.48

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Solution

The fourth proportional to 3,899.99, 5,851.74 and 2,438.48 is: 3,658.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.99 : 5,851.74 = 2,438.48 : x
  2. Step 2: Convert to fraction form
    3,899.99/5,851.74 = 2,438.48/x
  3. Step 3: Cross multiply
    3,899.99x = 5,851.74 × 2,438.48
  4. Step 4: Simplify right side
    3,899.99x = 14,269,350.96
  5. Step 5: Solve for x
    x = 14,269,350.96/3,899.99
  6. Step 6: Final answer
    x = 3,658.82

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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.