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Finding the Fourth Proportional to 101,881.44, 140,589.33 and 56,555.84

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Solution

The fourth proportional to 101,881.44, 140,589.33 and 56,555.84 is: 78,043.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,881.44 : 140,589.33 = 56,555.84 : x
  2. Step 2: Convert to fraction form
    101,881.44/140,589.33 = 56,555.84/x
  3. Step 3: Cross multiply
    101,881.44x = 140,589.33 × 56,555.84
  4. Step 4: Simplify right side
    101,881.44x = 7,951,147,653.19
  5. Step 5: Solve for x
    x = 7,951,147,653.19/101,881.44
  6. Step 6: Final answer
    x = 78,043.14

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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.