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Finding the Fourth Proportional to 3,862.34, 5,793.52 and 940.64

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Solution

The fourth proportional to 3,862.34, 5,793.52 and 940.64 is: 1,410.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.34 : 5,793.52 = 940.64 : x
  2. Step 2: Convert to fraction form
    3,862.34/5,793.52 = 940.64/x
  3. Step 3: Cross multiply
    3,862.34x = 5,793.52 × 940.64
  4. Step 4: Simplify right side
    3,862.34x = 5,449,616.65
  5. Step 5: Solve for x
    x = 5,449,616.65/3,862.34
  6. Step 6: Final answer
    x = 1,410.96

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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.