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Finding the Fourth Proportional to 8,891.89, 13,338.52 and 2,651.43

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Solution

The fourth proportional to 8,891.89, 13,338.52 and 2,651.43 is: 3,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.89 : 13,338.52 = 2,651.43 : x
  2. Step 2: Convert to fraction form
    8,891.89/13,338.52 = 2,651.43/x
  3. Step 3: Cross multiply
    8,891.89x = 13,338.52 × 2,651.43
  4. Step 4: Simplify right side
    8,891.89x = 35,366,152.08
  5. Step 5: Solve for x
    x = 35,366,152.08/8,891.89
  6. Step 6: Final answer
    x = 3,977.35

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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.