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Finding the Fourth Proportional to 78,601.88, 108,478.79 and 44,619.54

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Solution

The fourth proportional to 78,601.88, 108,478.79 and 44,619.54 is: 61,579.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,601.88 : 108,478.79 = 44,619.54 : x
  2. Step 2: Convert to fraction form
    78,601.88/108,478.79 = 44,619.54/x
  3. Step 3: Cross multiply
    78,601.88x = 108,478.79 × 44,619.54
  4. Step 4: Simplify right side
    78,601.88x = 4,840,273,486.46
  5. Step 5: Solve for x
    x = 4,840,273,486.46/78,601.88
  6. Step 6: Final answer
    x = 61,579.62

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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.