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Finding the Fourth Proportional to 43,693.75, 65,540.67 and 10,861.75

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Solution

The fourth proportional to 43,693.75, 65,540.67 and 10,861.75 is: 16,292.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,693.75 : 65,540.67 = 10,861.75 : x
  2. Step 2: Convert to fraction form
    43,693.75/65,540.67 = 10,861.75/x
  3. Step 3: Cross multiply
    43,693.75x = 65,540.67 × 10,861.75
  4. Step 4: Simplify right side
    43,693.75x = 711,886,372.37
  5. Step 5: Solve for x
    x = 711,886,372.37/43,693.75
  6. Step 6: Final answer
    x = 16,292.64

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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.