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Finding the Fourth Proportional to 76,803.72, 105,991.38 and 44,969.64

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Solution

The fourth proportional to 76,803.72, 105,991.38 and 44,969.64 is: 62,059.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,803.72 : 105,991.38 = 44,969.64 : x
  2. Step 2: Convert to fraction form
    76,803.72/105,991.38 = 44,969.64/x
  3. Step 3: Cross multiply
    76,803.72x = 105,991.38 × 44,969.64
  4. Step 4: Simplify right side
    76,803.72x = 4,766,394,201.70
  5. Step 5: Solve for x
    x = 4,766,394,201.70/76,803.72
  6. Step 6: Final answer
    x = 62,059.42

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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.