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Finding the Fourth Proportional to 139,360.91, 192,212.09 and 96,411.87

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Solution

The fourth proportional to 139,360.91, 192,212.09 and 96,411.87 is: 132,975.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,360.91 : 192,212.09 = 96,411.87 : x
  2. Step 2: Convert to fraction form
    139,360.91/192,212.09 = 96,411.87/x
  3. Step 3: Cross multiply
    139,360.91x = 192,212.09 × 96,411.87
  4. Step 4: Simplify right side
    139,360.91x = 18,531,526,912.99
  5. Step 5: Solve for x
    x = 18,531,526,912.99/139,360.91
  6. Step 6: Final answer
    x = 132,975.08

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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.