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Finding the Fourth Proportional to 92,736.15, 127,879.74 and 79,351.71

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Solution

The fourth proportional to 92,736.15, 127,879.74 and 79,351.71 is: 109,423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,736.15 : 127,879.74 = 79,351.71 : x
  2. Step 2: Convert to fraction form
    92,736.15/127,879.74 = 79,351.71/x
  3. Step 3: Cross multiply
    92,736.15x = 127,879.74 × 79,351.71
  4. Step 4: Simplify right side
    92,736.15x = 10,147,476,043.36
  5. Step 5: Solve for x
    x = 10,147,476,043.36/92,736.15
  6. Step 6: Final answer
    x = 109,423.09

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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.