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Finding the Fourth Proportional to 76,951.80, 115,428.60 and 27,033.36

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Solution

The fourth proportional to 76,951.80, 115,428.60 and 27,033.36 is: 40,550.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,951.80 : 115,428.60 = 27,033.36 : x
  2. Step 2: Convert to fraction form
    76,951.80/115,428.60 = 27,033.36/x
  3. Step 3: Cross multiply
    76,951.80x = 115,428.60 × 27,033.36
  4. Step 4: Simplify right side
    76,951.80x = 3,120,422,898.10
  5. Step 5: Solve for x
    x = 3,120,422,898.10/76,951.80
  6. Step 6: Final answer
    x = 40,550.36

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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.