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Finding the Fourth Proportional to 8,375.86, 11,556.31 and 5,393.42

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Solution

The fourth proportional to 8,375.86, 11,556.31 and 5,393.42 is: 7,441.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,375.86 : 11,556.31 = 5,393.42 : x
  2. Step 2: Convert to fraction form
    8,375.86/11,556.31 = 5,393.42/x
  3. Step 3: Cross multiply
    8,375.86x = 11,556.31 × 5,393.42
  4. Step 4: Simplify right side
    8,375.86x = 62,328,033.48
  5. Step 5: Solve for x
    x = 62,328,033.48/8,375.86
  6. Step 6: Final answer
    x = 7,441.39

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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.