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Finding the Fourth Proportional to 192,883.11, 289,243.32 and 72,919.81

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Solution

The fourth proportional to 192,883.11, 289,243.32 and 72,919.81 is: 109,348.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,883.11 : 289,243.32 = 72,919.81 : x
  2. Step 2: Convert to fraction form
    192,883.11/289,243.32 = 72,919.81/x
  3. Step 3: Cross multiply
    192,883.11x = 289,243.32 × 72,919.81
  4. Step 4: Simplify right side
    192,883.11x = 21,091,567,938.17
  5. Step 5: Solve for x
    x = 21,091,567,938.17/192,883.11
  6. Step 6: Final answer
    x = 109,348.96

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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.