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Finding the Fourth Proportional to 192,715.91, 289,093.11 and 66,339.43

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Solution

The fourth proportional to 192,715.91, 289,093.11 and 66,339.43 is: 99,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,715.91 : 289,093.11 = 66,339.43 : x
  2. Step 2: Convert to fraction form
    192,715.91/289,093.11 = 66,339.43/x
  3. Step 3: Cross multiply
    192,715.91x = 289,093.11 × 66,339.43
  4. Step 4: Simplify right side
    192,715.91x = 19,178,272,134.33
  5. Step 5: Solve for x
    x = 19,178,272,134.33/192,715.91
  6. Step 6: Final answer
    x = 99,515.77

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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.