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Finding the Fourth Proportional to 88,661.77, 133,584.94 and 80,239.59

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Solution

The fourth proportional to 88,661.77, 133,584.94 and 80,239.59 is: 120,895.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,661.77 : 133,584.94 = 80,239.59 : x
  2. Step 2: Convert to fraction form
    88,661.77/133,584.94 = 80,239.59/x
  3. Step 3: Cross multiply
    88,661.77x = 133,584.94 × 80,239.59
  4. Step 4: Simplify right side
    88,661.77x = 10,718,800,916.07
  5. Step 5: Solve for x
    x = 10,718,800,916.07/88,661.77
  6. Step 6: Final answer
    x = 120,895.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.