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Finding the Fourth Proportional to 101,717.44, 140,378.34 and 56,399.92

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Solution

The fourth proportional to 101,717.44, 140,378.34 and 56,399.92 is: 77,836.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,717.44 : 140,378.34 = 56,399.92 : x
  2. Step 2: Convert to fraction form
    101,717.44/140,378.34 = 56,399.92/x
  3. Step 3: Cross multiply
    101,717.44x = 140,378.34 × 56,399.92
  4. Step 4: Simplify right side
    101,717.44x = 7,917,327,145.73
  5. Step 5: Solve for x
    x = 7,917,327,145.73/101,717.44
  6. Step 6: Final answer
    x = 77,836.48

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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.