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Finding the Fourth Proportional to 3,040.95, 4,561.67 and 961.09

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Solution

The fourth proportional to 3,040.95, 4,561.67 and 961.09 is: 1,441.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,040.95 : 4,561.67 = 961.09 : x
  2. Step 2: Convert to fraction form
    3,040.95/4,561.67 = 961.09/x
  3. Step 3: Cross multiply
    3,040.95x = 4,561.67 × 961.09
  4. Step 4: Simplify right side
    3,040.95x = 4,384,170.61
  5. Step 5: Solve for x
    x = 4,384,170.61/3,040.95
  6. Step 6: Final answer
    x = 1,441.71

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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.