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Finding the Fourth Proportional to 619,273.80, 928,910.70 and 198,592.20

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Solution

The fourth proportional to 619,273.80, 928,910.70 and 198,592.20 is: 297,888.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,273.80 : 928,910.70 = 198,592.20 : x
  2. Step 2: Convert to fraction form
    619,273.80/928,910.70 = 198,592.20/x
  3. Step 3: Cross multiply
    619,273.80x = 928,910.70 × 198,592.20
  4. Step 4: Simplify right side
    619,273.80x = 184,474,419,516.54
  5. Step 5: Solve for x
    x = 184,474,419,516.54/619,273.80
  6. Step 6: Final answer
    x = 297,888.30

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Double scale
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Similar ratio
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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.