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Finding the Fourth Proportional to 996.96, 1,493.82 and 790.41

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Solution

The fourth proportional to 996.96, 1,493.82 and 790.41 is: 1,184.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.96 : 1,493.82 = 790.41 : x
  2. Step 2: Convert to fraction form
    996.96/1,493.82 = 790.41/x
  3. Step 3: Cross multiply
    996.96x = 1,493.82 × 790.41
  4. Step 4: Simplify right side
    996.96x = 1,180,730.27
  5. Step 5: Solve for x
    x = 1,180,730.27/996.96
  6. Step 6: Final answer
    x = 1,184.33

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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.