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Finding the Fourth Proportional to 5,920.34, 8,169.17 and 3,933.81

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Solution

The fourth proportional to 5,920.34, 8,169.17 and 3,933.81 is: 5,428.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.34 : 8,169.17 = 3,933.81 : x
  2. Step 2: Convert to fraction form
    5,920.34/8,169.17 = 3,933.81/x
  3. Step 3: Cross multiply
    5,920.34x = 8,169.17 × 3,933.81
  4. Step 4: Simplify right side
    5,920.34x = 32,135,942.97
  5. Step 5: Solve for x
    x = 32,135,942.97/5,920.34
  6. Step 6: Final answer
    x = 5,428.06

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1.5x scale

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.