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Finding the Fourth Proportional to 80,705.56, 111,374.54 and 44,407.48

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Solution

The fourth proportional to 80,705.56, 111,374.54 and 44,407.48 is: 61,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,705.56 : 111,374.54 = 44,407.48 : x
  2. Step 2: Convert to fraction form
    80,705.56/111,374.54 = 44,407.48/x
  3. Step 3: Cross multiply
    80,705.56x = 111,374.54 × 44,407.48
  4. Step 4: Simplify right side
    80,705.56x = 4,945,862,657.56
  5. Step 5: Solve for x
    x = 4,945,862,657.56/80,705.56
  6. Step 6: Final answer
    x = 61,282.80

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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.