Home / 665,961.80-998,942.70-192,662.60

Finding the Fourth Proportional to 665,961.80, 998,942.70 and 192,662.60

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Solution

The fourth proportional to 665,961.80, 998,942.70 and 192,662.60 is: 288,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,961.80 : 998,942.70 = 192,662.60 : x
  2. Step 2: Convert to fraction form
    665,961.80/998,942.70 = 192,662.60/x
  3. Step 3: Cross multiply
    665,961.80x = 998,942.70 × 192,662.60
  4. Step 4: Simplify right side
    665,961.80x = 192,458,897,833.02
  5. Step 5: Solve for x
    x = 192,458,897,833.02/665,961.80
  6. Step 6: Final answer
    x = 288,993.90

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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.