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Finding the Fourth Proportional to 80,342.54, 110,879.34 and 44,543.78

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Solution

The fourth proportional to 80,342.54, 110,879.34 and 44,543.78 is: 61,474.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,342.54 : 110,879.34 = 44,543.78 : x
  2. Step 2: Convert to fraction form
    80,342.54/110,879.34 = 44,543.78/x
  3. Step 3: Cross multiply
    80,342.54x = 110,879.34 × 44,543.78
  4. Step 4: Simplify right side
    80,342.54x = 4,938,984,927.51
  5. Step 5: Solve for x
    x = 4,938,984,927.51/80,342.54
  6. Step 6: Final answer
    x = 61,474.09

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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.