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Finding the Fourth Proportional to 665,803.40, 998,834.70 and 192,504.20

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Solution

The fourth proportional to 665,803.40, 998,834.70 and 192,504.20 is: 288,793.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,803.40 : 998,834.70 = 192,504.20 : x
  2. Step 2: Convert to fraction form
    665,803.40/998,834.70 = 192,504.20/x
  3. Step 3: Cross multiply
    665,803.40x = 998,834.70 × 192,504.20
  4. Step 4: Simplify right side
    665,803.40x = 192,279,874,855.74
  5. Step 5: Solve for x
    x = 192,279,874,855.74/665,803.40
  6. Step 6: Final answer
    x = 288,793.77

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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.