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Finding the Fourth Proportional to 80,109.45, 110,551.38 and 43,811.61

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Solution

The fourth proportional to 80,109.45, 110,551.38 and 43,811.61 is: 60,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,109.45 : 110,551.38 = 43,811.61 : x
  2. Step 2: Convert to fraction form
    80,109.45/110,551.38 = 43,811.61/x
  3. Step 3: Cross multiply
    80,109.45x = 110,551.38 × 43,811.61
  4. Step 4: Simplify right side
    80,109.45x = 4,843,433,945.52
  5. Step 5: Solve for x
    x = 4,843,433,945.52/80,109.45
  6. Step 6: Final answer
    x = 60,460.21

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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.