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Finding the Fourth Proportional to 79,247.48, 118,976.79 and 45,991.41

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Solution

The fourth proportional to 79,247.48, 118,976.79 and 45,991.41 is: 69,048.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,247.48 : 118,976.79 = 45,991.41 : x
  2. Step 2: Convert to fraction form
    79,247.48/118,976.79 = 45,991.41/x
  3. Step 3: Cross multiply
    79,247.48x = 118,976.79 × 45,991.41
  4. Step 4: Simplify right side
    79,247.48x = 5,471,910,329.37
  5. Step 5: Solve for x
    x = 5,471,910,329.37/79,247.48
  6. Step 6: Final answer
    x = 69,048.39

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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.