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Finding the Fourth Proportional to 1,498.64, 2,067.60 and 994.64

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Solution

The fourth proportional to 1,498.64, 2,067.60 and 994.64 is: 1,372.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,498.64 : 2,067.60 = 994.64 : x
  2. Step 2: Convert to fraction form
    1,498.64/2,067.60 = 994.64/x
  3. Step 3: Cross multiply
    1,498.64x = 2,067.60 × 994.64
  4. Step 4: Simplify right side
    1,498.64x = 2,056,517.66
  5. Step 5: Solve for x
    x = 2,056,517.66/1,498.64
  6. Step 6: Final answer
    x = 1,372.26

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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.