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Finding the Fourth Proportional to 193,998.40, 290,781.60 and 75,630.40

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Solution

The fourth proportional to 193,998.40, 290,781.60 and 75,630.40 is: 113,361.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,998.40 : 290,781.60 = 75,630.40 : x
  2. Step 2: Convert to fraction form
    193,998.40/290,781.60 = 75,630.40/x
  3. Step 3: Cross multiply
    193,998.40x = 290,781.60 × 75,630.40
  4. Step 4: Simplify right side
    193,998.40x = 21,991,928,720.64
  5. Step 5: Solve for x
    x = 21,991,928,720.64/193,998.40
  6. Step 6: Final answer
    x = 113,361.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.