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Finding the Fourth Proportional to 996.58, 1,494.84 and 936.43

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Solution

The fourth proportional to 996.58, 1,494.84 and 936.43 is: 1,404.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.58 : 1,494.84 = 936.43 : x
  2. Step 2: Convert to fraction form
    996.58/1,494.84 = 936.43/x
  3. Step 3: Cross multiply
    996.58x = 1,494.84 × 936.43
  4. Step 4: Simplify right side
    996.58x = 1,399,813.02
  5. Step 5: Solve for x
    x = 1,399,813.02/996.58
  6. Step 6: Final answer
    x = 1,404.62

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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.