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Finding the Fourth Proportional to 8,651.75, 11,940.30 and 5,296.79

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Solution

The fourth proportional to 8,651.75, 11,940.30 and 5,296.79 is: 7,310.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.75 : 11,940.30 = 5,296.79 : x
  2. Step 2: Convert to fraction form
    8,651.75/11,940.30 = 5,296.79/x
  3. Step 3: Cross multiply
    8,651.75x = 11,940.30 × 5,296.79
  4. Step 4: Simplify right side
    8,651.75x = 63,245,201.94
  5. Step 5: Solve for x
    x = 63,245,201.94/8,651.75
  6. Step 6: Final answer
    x = 7,310.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.