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Finding the Fourth Proportional to 372,021.20, 558,204.60 and 194,728.40

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Solution

The fourth proportional to 372,021.20, 558,204.60 and 194,728.40 is: 292,183.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,021.20 : 558,204.60 = 194,728.40 : x
  2. Step 2: Convert to fraction form
    372,021.20/558,204.60 = 194,728.40/x
  3. Step 3: Cross multiply
    372,021.20x = 558,204.60 × 194,728.40
  4. Step 4: Simplify right side
    372,021.20x = 108,698,288,630.64
  5. Step 5: Solve for x
    x = 108,698,288,630.64/372,021.20
  6. Step 6: Final answer
    x = 292,183.05

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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.