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Finding the Fourth Proportional to 665,755.11, 998,639.96 and 192,444.57

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Solution

The fourth proportional to 665,755.11, 998,639.96 and 192,444.57 is: 288,668.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,755.11 : 998,639.96 = 192,444.57 : x
  2. Step 2: Convert to fraction form
    665,755.11/998,639.96 = 192,444.57/x
  3. Step 3: Cross multiply
    665,755.11x = 998,639.96 × 192,444.57
  4. Step 4: Simplify right side
    665,755.11x = 192,182,836,724.79
  5. Step 5: Solve for x
    x = 192,182,836,724.79/665,755.11
  6. Step 6: Final answer
    x = 288,668.96

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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.