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Finding the Fourth Proportional to 101,899.74, 140,620.86 and 55,958.88

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Solution

The fourth proportional to 101,899.74, 140,620.86 and 55,958.88 is: 77,222.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,899.74 : 140,620.86 = 55,958.88 : x
  2. Step 2: Convert to fraction form
    101,899.74/140,620.86 = 55,958.88/x
  3. Step 3: Cross multiply
    101,899.74x = 140,620.86 × 55,958.88
  4. Step 4: Simplify right side
    101,899.74x = 7,868,985,830.24
  5. Step 5: Solve for x
    x = 7,868,985,830.24/101,899.74
  6. Step 6: Final answer
    x = 77,222.83

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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.