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Finding the Fourth Proportional to 7,891.44, 11,842.02 and 4,384.14

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Solution

The fourth proportional to 7,891.44, 11,842.02 and 4,384.14 is: 6,578.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.44 : 11,842.02 = 4,384.14 : x
  2. Step 2: Convert to fraction form
    7,891.44/11,842.02 = 4,384.14/x
  3. Step 3: Cross multiply
    7,891.44x = 11,842.02 × 4,384.14
  4. Step 4: Simplify right side
    7,891.44x = 51,917,073.56
  5. Step 5: Solve for x
    x = 51,917,073.56/7,891.44
  6. Step 6: Final answer
    x = 6,578.91

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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.