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Finding the Fourth Proportional to 197,190.40, 295,445.40 and 91,793.20

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Solution

The fourth proportional to 197,190.40, 295,445.40 and 91,793.20 is: 137,531.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,190.40 : 295,445.40 = 91,793.20 : x
  2. Step 2: Convert to fraction form
    197,190.40/295,445.40 = 91,793.20/x
  3. Step 3: Cross multiply
    197,190.40x = 295,445.40 × 91,793.20
  4. Step 4: Simplify right side
    197,190.40x = 27,119,878,691.28
  5. Step 5: Solve for x
    x = 27,119,878,691.28/197,190.40
  6. Step 6: Final answer
    x = 137,531.44

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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.