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Finding the Fourth Proportional to 77,879.48, 116,735.78 and 55,625.33

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Solution

The fourth proportional to 77,879.48, 116,735.78 and 55,625.33 is: 83,378.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,879.48 : 116,735.78 = 55,625.33 : x
  2. Step 2: Convert to fraction form
    77,879.48/116,735.78 = 55,625.33/x
  3. Step 3: Cross multiply
    77,879.48x = 116,735.78 × 55,625.33
  4. Step 4: Simplify right side
    77,879.48x = 6,493,466,716.21
  5. Step 5: Solve for x
    x = 6,493,466,716.21/77,879.48
  6. Step 6: Final answer
    x = 83,378.41

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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.