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Finding the Fourth Proportional to 203,993.60, 281,420.60 and 135,944.28

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Solution

The fourth proportional to 203,993.60, 281,420.60 and 135,944.28 is: 187,542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,993.60 : 281,420.60 = 135,944.28 : x
  2. Step 2: Convert to fraction form
    203,993.60/281,420.60 = 135,944.28/x
  3. Step 3: Cross multiply
    203,993.60x = 281,420.60 × 135,944.28
  4. Step 4: Simplify right side
    203,993.60x = 38,257,520,164.45
  5. Step 5: Solve for x
    x = 38,257,520,164.45/203,993.60
  6. Step 6: Final answer
    x = 187,542.75

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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.