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Finding the Fourth Proportional to 3,866.10, 5,794.04 and 2,111.88

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Solution

The fourth proportional to 3,866.10, 5,794.04 and 2,111.88 is: 3,165.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.10 : 5,794.04 = 2,111.88 : x
  2. Step 2: Convert to fraction form
    3,866.10/5,794.04 = 2,111.88/x
  3. Step 3: Cross multiply
    3,866.10x = 5,794.04 × 2,111.88
  4. Step 4: Simplify right side
    3,866.10x = 12,236,317.20
  5. Step 5: Solve for x
    x = 12,236,317.20/3,866.10
  6. Step 6: Final answer
    x = 3,165.03

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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.