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Finding the Fourth Proportional to 619,475.20, 929,212.80 and 198,793.60

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Solution

The fourth proportional to 619,475.20, 929,212.80 and 198,793.60 is: 298,190.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,475.20 : 929,212.80 = 198,793.60 : x
  2. Step 2: Convert to fraction form
    619,475.20/929,212.80 = 198,793.60/x
  3. Step 3: Cross multiply
    619,475.20x = 929,212.80 × 198,793.60
  4. Step 4: Simplify right side
    619,475.20x = 184,721,557,678.08
  5. Step 5: Solve for x
    x = 184,721,557,678.08/619,475.20
  6. Step 6: Final answer
    x = 298,190.40

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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.