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Finding the Fourth Proportional to 7,791.37, 11,690.48 and 4,092.74

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Solution

The fourth proportional to 7,791.37, 11,690.48 and 4,092.74 is: 6,140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.37 : 11,690.48 = 4,092.74 : x
  2. Step 2: Convert to fraction form
    7,791.37/11,690.48 = 4,092.74/x
  3. Step 3: Cross multiply
    7,791.37x = 11,690.48 × 4,092.74
  4. Step 4: Simplify right side
    7,791.37x = 47,846,095.12
  5. Step 5: Solve for x
    x = 47,846,095.12/7,791.37
  6. Step 6: Final answer
    x = 6,140.91

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1.5x scale

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.