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Finding the Fourth Proportional to 11,791.80, 17,682.84 and 4,394.88

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Solution

The fourth proportional to 11,791.80, 17,682.84 and 4,394.88 is: 6,590.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.80 : 17,682.84 = 4,394.88 : x
  2. Step 2: Convert to fraction form
    11,791.80/17,682.84 = 4,394.88/x
  3. Step 3: Cross multiply
    11,791.80x = 17,682.84 × 4,394.88
  4. Step 4: Simplify right side
    11,791.80x = 77,713,959.86
  5. Step 5: Solve for x
    x = 77,713,959.86/11,791.80
  6. Step 6: Final answer
    x = 6,590.51

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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.