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Finding the Fourth Proportional to 36,858.78, 50,865.84 and 20,091.78

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Solution

The fourth proportional to 36,858.78, 50,865.84 and 20,091.78 is: 27,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,858.78 : 50,865.84 = 20,091.78 : x
  2. Step 2: Convert to fraction form
    36,858.78/50,865.84 = 20,091.78/x
  3. Step 3: Cross multiply
    36,858.78x = 50,865.84 × 20,091.78
  4. Step 4: Simplify right side
    36,858.78x = 1,021,985,266.80
  5. Step 5: Solve for x
    x = 1,021,985,266.80/36,858.78
  6. Step 6: Final answer
    x = 27,727.05

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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.