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Finding the Fourth Proportional to 3,067.80, 4,601.74 and 876.60

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Solution

The fourth proportional to 3,067.80, 4,601.74 and 876.60 is: 1,314.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,067.80 : 4,601.74 = 876.60 : x
  2. Step 2: Convert to fraction form
    3,067.80/4,601.74 = 876.60/x
  3. Step 3: Cross multiply
    3,067.80x = 4,601.74 × 876.60
  4. Step 4: Simplify right side
    3,067.80x = 4,033,885.28
  5. Step 5: Solve for x
    x = 4,033,885.28/3,067.80
  6. Step 6: Final answer
    x = 1,314.91

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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.