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Finding the Fourth Proportional to 70,918.56, 106,171.92 and 41,245.92

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Solution

The fourth proportional to 70,918.56, 106,171.92 and 41,245.92 is: 61,749.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,918.56 : 106,171.92 = 41,245.92 : x
  2. Step 2: Convert to fraction form
    70,918.56/106,171.92 = 41,245.92/x
  3. Step 3: Cross multiply
    70,918.56x = 106,171.92 × 41,245.92
  4. Step 4: Simplify right side
    70,918.56x = 4,379,158,518.57
  5. Step 5: Solve for x
    x = 4,379,158,518.57/70,918.56
  6. Step 6: Final answer
    x = 61,749.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.