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Finding the Fourth Proportional to 80,415.80, 110,971.78 and 44,606.60

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Solution

The fourth proportional to 80,415.80, 110,971.78 and 44,606.60 is: 61,555.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,415.80 : 110,971.78 = 44,606.60 : x
  2. Step 2: Convert to fraction form
    80,415.80/110,971.78 = 44,606.60/x
  3. Step 3: Cross multiply
    80,415.80x = 110,971.78 × 44,606.60
  4. Step 4: Simplify right side
    80,415.80x = 4,950,073,801.75
  5. Step 5: Solve for x
    x = 4,950,073,801.75/80,415.80
  6. Step 6: Final answer
    x = 61,555.99

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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.