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Finding the Fourth Proportional to 3,791.84, 5,235.20 and 3,556.59

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Solution

The fourth proportional to 3,791.84, 5,235.20 and 3,556.59 is: 4,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791.84 : 5,235.20 = 3,556.59 : x
  2. Step 2: Convert to fraction form
    3,791.84/5,235.20 = 3,556.59/x
  3. Step 3: Cross multiply
    3,791.84x = 5,235.20 × 3,556.59
  4. Step 4: Simplify right side
    3,791.84x = 18,619,468.86
  5. Step 5: Solve for x
    x = 18,619,468.86/3,791.84
  6. Step 6: Final answer
    x = 4,910.40

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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.