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Finding the Fourth Proportional to 36,845.90, 50,847.34 and 20,078.90

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Solution

The fourth proportional to 36,845.90, 50,847.34 and 20,078.90 is: 27,708.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,845.90 : 50,847.34 = 20,078.90 : x
  2. Step 2: Convert to fraction form
    36,845.90/50,847.34 = 20,078.90/x
  3. Step 3: Cross multiply
    36,845.90x = 50,847.34 × 20,078.90
  4. Step 4: Simplify right side
    36,845.90x = 1,020,958,655.13
  5. Step 5: Solve for x
    x = 1,020,958,655.13/36,845.90
  6. Step 6: Final answer
    x = 27,708.88

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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.