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Finding the Fourth Proportional to 71,980.96, 108,007.90 and 48,558.19

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Solution

The fourth proportional to 71,980.96, 108,007.90 and 48,558.19 is: 72,861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,980.96 : 108,007.90 = 48,558.19 : x
  2. Step 2: Convert to fraction form
    71,980.96/108,007.90 = 48,558.19/x
  3. Step 3: Cross multiply
    71,980.96x = 108,007.90 × 48,558.19
  4. Step 4: Simplify right side
    71,980.96x = 5,244,667,738.29
  5. Step 5: Solve for x
    x = 5,244,667,738.29/71,980.96
  6. Step 6: Final answer
    x = 72,861.88

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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.