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Finding the Fourth Proportional to 7,167.88, 9,891.84 and 4,024.12

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Solution

The fourth proportional to 7,167.88, 9,891.84 and 4,024.12 is: 5,553.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,167.88 : 9,891.84 = 4,024.12 : x
  2. Step 2: Convert to fraction form
    7,167.88/9,891.84 = 4,024.12/x
  3. Step 3: Cross multiply
    7,167.88x = 9,891.84 × 4,024.12
  4. Step 4: Simplify right side
    7,167.88x = 39,805,951.18
  5. Step 5: Solve for x
    x = 39,805,951.18/7,167.88
  6. Step 6: Final answer
    x = 5,553.38

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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.