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Finding the Fourth Proportional to 36,806.40, 50,793.08 and 20,891.12

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Solution

The fourth proportional to 36,806.40, 50,793.08 and 20,891.12 is: 28,829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,806.40 : 50,793.08 = 20,891.12 : x
  2. Step 2: Convert to fraction form
    36,806.40/50,793.08 = 20,891.12/x
  3. Step 3: Cross multiply
    36,806.40x = 50,793.08 × 20,891.12
  4. Step 4: Simplify right side
    36,806.40x = 1,061,123,971.03
  5. Step 5: Solve for x
    x = 1,061,123,971.03/36,806.40
  6. Step 6: Final answer
    x = 28,829.88

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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.