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Finding the Fourth Proportional to 7,791.88, 10,752.99 and 4,255.42

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Solution

The fourth proportional to 7,791.88, 10,752.99 and 4,255.42 is: 5,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.88 : 10,752.99 = 4,255.42 : x
  2. Step 2: Convert to fraction form
    7,791.88/10,752.99 = 4,255.42/x
  3. Step 3: Cross multiply
    7,791.88x = 10,752.99 × 4,255.42
  4. Step 4: Simplify right side
    7,791.88x = 45,758,488.71
  5. Step 5: Solve for x
    x = 45,758,488.71/7,791.88
  6. Step 6: Final answer
    x = 5,872.59

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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.