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Finding the Fourth Proportional to 28,791.88, 39,743.94 and 22,506.28

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Solution

The fourth proportional to 28,791.88, 39,743.94 and 22,506.28 is: 31,067.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.88 : 39,743.94 = 22,506.28 : x
  2. Step 2: Convert to fraction form
    28,791.88/39,743.94 = 22,506.28/x
  3. Step 3: Cross multiply
    28,791.88x = 39,743.94 × 22,506.28
  4. Step 4: Simplify right side
    28,791.88x = 894,488,241.94
  5. Step 5: Solve for x
    x = 894,488,241.94/28,791.88
  6. Step 6: Final answer
    x = 31,067.38

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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.