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Finding the Fourth Proportional to 3,067.74, 4,601.86 and 986.98

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Solution

The fourth proportional to 3,067.74, 4,601.86 and 986.98 is: 1,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,067.74 : 4,601.86 = 986.98 : x
  2. Step 2: Convert to fraction form
    3,067.74/4,601.86 = 986.98/x
  3. Step 3: Cross multiply
    3,067.74x = 4,601.86 × 986.98
  4. Step 4: Simplify right side
    3,067.74x = 4,541,943.78
  5. Step 5: Solve for x
    x = 4,541,943.78/3,067.74
  6. Step 6: Final answer
    x = 1,480.55

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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.