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Finding the Fourth Proportional to 73,690.90, 101,693.78 and 41,861.54

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Solution

The fourth proportional to 73,690.90, 101,693.78 and 41,861.54 is: 57,769.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,690.90 : 101,693.78 = 41,861.54 : x
  2. Step 2: Convert to fraction form
    73,690.90/101,693.78 = 41,861.54/x
  3. Step 3: Cross multiply
    73,690.90x = 101,693.78 × 41,861.54
  4. Step 4: Simplify right side
    73,690.90x = 4,257,058,441.13
  5. Step 5: Solve for x
    x = 4,257,058,441.13/73,690.90
  6. Step 6: Final answer
    x = 57,769.12

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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.