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Finding the Fourth Proportional to 119,884.77, 165,440.61 and 66,169.41

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Solution

The fourth proportional to 119,884.77, 165,440.61 and 66,169.41 is: 91,313.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,884.77 : 165,440.61 = 66,169.41 : x
  2. Step 2: Convert to fraction form
    119,884.77/165,440.61 = 66,169.41/x
  3. Step 3: Cross multiply
    119,884.77x = 165,440.61 × 66,169.41
  4. Step 4: Simplify right side
    119,884.77x = 10,947,107,553.74
  5. Step 5: Solve for x
    x = 10,947,107,553.74/119,884.77
  6. Step 6: Final answer
    x = 91,313.58

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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.