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Finding the Fourth Proportional to 996.17, 1,494.50 and 338.04

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Solution

The fourth proportional to 996.17, 1,494.50 and 338.04 is: 507.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.17 : 1,494.50 = 338.04 : x
  2. Step 2: Convert to fraction form
    996.17/1,494.50 = 338.04/x
  3. Step 3: Cross multiply
    996.17x = 1,494.50 × 338.04
  4. Step 4: Simplify right side
    996.17x = 505,191.62
  5. Step 5: Solve for x
    x = 505,191.62/996.17
  6. Step 6: Final answer
    x = 507.13

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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.