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Finding the Fourth Proportional to 139,198.19, 192,250.13 and 94,062.56

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Solution

The fourth proportional to 139,198.19, 192,250.13 and 94,062.56 is: 129,912.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,198.19 : 192,250.13 = 94,062.56 : x
  2. Step 2: Convert to fraction form
    139,198.19/192,250.13 = 94,062.56/x
  3. Step 3: Cross multiply
    139,198.19x = 192,250.13 × 94,062.56
  4. Step 4: Simplify right side
    139,198.19x = 18,083,537,956.57
  5. Step 5: Solve for x
    x = 18,083,537,956.57/139,198.19
  6. Step 6: Final answer
    x = 129,912.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.