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Finding the Fourth Proportional to 69,879.60, 104,787.14 and 22,485.87

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Solution

The fourth proportional to 69,879.60, 104,787.14 and 22,485.87 is: 33,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,879.60 : 104,787.14 = 22,485.87 : x
  2. Step 2: Convert to fraction form
    69,879.60/104,787.14 = 22,485.87/x
  3. Step 3: Cross multiply
    69,879.60x = 104,787.14 × 22,485.87
  4. Step 4: Simplify right side
    69,879.60x = 2,356,229,895.28
  5. Step 5: Solve for x
    x = 2,356,229,895.28/69,879.60
  6. Step 6: Final answer
    x = 33,718.42

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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.