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Finding the Fourth Proportional to 192,418.11, 288,631.49 and 66,057.39

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Solution

The fourth proportional to 192,418.11, 288,631.49 and 66,057.39 is: 99,087.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,418.11 : 288,631.49 = 66,057.39 : x
  2. Step 2: Convert to fraction form
    192,418.11/288,631.49 = 66,057.39/x
  3. Step 3: Cross multiply
    192,418.11x = 288,631.49 × 66,057.39
  4. Step 4: Simplify right side
    192,418.11x = 19,066,242,570.92
  5. Step 5: Solve for x
    x = 19,066,242,570.92/192,418.11
  6. Step 6: Final answer
    x = 99,087.57

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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.