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Finding the Fourth Proportional to 86,251.60, 119,020.74 and 48,518.56

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Solution

The fourth proportional to 86,251.60, 119,020.74 and 48,518.56 is: 66,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,251.60 : 119,020.74 = 48,518.56 : x
  2. Step 2: Convert to fraction form
    86,251.60/119,020.74 = 48,518.56/x
  3. Step 3: Cross multiply
    86,251.60x = 119,020.74 × 48,518.56
  4. Step 4: Simplify right side
    86,251.60x = 5,774,714,914.93
  5. Step 5: Solve for x
    x = 5,774,714,914.93/86,251.60
  6. Step 6: Final answer
    x = 66,951.97

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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.