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Finding the Fourth Proportional to 6,578.72, 9,079.44 and 3,926.12

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Solution

The fourth proportional to 6,578.72, 9,079.44 and 3,926.12 is: 5,418.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,578.72 : 9,079.44 = 3,926.12 : x
  2. Step 2: Convert to fraction form
    6,578.72/9,079.44 = 3,926.12/x
  3. Step 3: Cross multiply
    6,578.72x = 9,079.44 × 3,926.12
  4. Step 4: Simplify right side
    6,578.72x = 35,646,970.97
  5. Step 5: Solve for x
    x = 35,646,970.97/6,578.72
  6. Step 6: Final answer
    x = 5,418.53

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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.