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Finding the Fourth Proportional to 665,855.80, 998,783.70 and 192,556.60

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Solution

The fourth proportional to 665,855.80, 998,783.70 and 192,556.60 is: 288,834.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,855.80 : 998,783.70 = 192,556.60 : x
  2. Step 2: Convert to fraction form
    665,855.80/998,783.70 = 192,556.60/x
  3. Step 3: Cross multiply
    665,855.80x = 998,783.70 × 192,556.60
  4. Step 4: Simplify right side
    665,855.80x = 192,322,393,407.42
  5. Step 5: Solve for x
    x = 192,322,393,407.42/665,855.80
  6. Step 6: Final answer
    x = 288,834.90

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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.