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Finding the Fourth Proportional to 3,993.78, 6,020.61 and 3,726.21

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Solution

The fourth proportional to 3,993.78, 6,020.61 and 3,726.21 is: 5,617.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.78 : 6,020.61 = 3,726.21 : x
  2. Step 2: Convert to fraction form
    3,993.78/6,020.61 = 3,726.21/x
  3. Step 3: Cross multiply
    3,993.78x = 6,020.61 × 3,726.21
  4. Step 4: Simplify right side
    3,993.78x = 22,434,057.19
  5. Step 5: Solve for x
    x = 22,434,057.19/3,993.78
  6. Step 6: Final answer
    x = 5,617.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.