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Finding the Fourth Proportional to 36,894.42, 50,912.55 and 20,977.11

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Solution

The fourth proportional to 36,894.42, 50,912.55 and 20,977.11 is: 28,947.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,894.42 : 50,912.55 = 20,977.11 : x
  2. Step 2: Convert to fraction form
    36,894.42/50,912.55 = 20,977.11/x
  3. Step 3: Cross multiply
    36,894.42x = 50,912.55 × 20,977.11
  4. Step 4: Simplify right side
    36,894.42x = 1,067,998,161.73
  5. Step 5: Solve for x
    x = 1,067,998,161.73/36,894.42
  6. Step 6: Final answer
    x = 28,947.42

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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.