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Finding the Fourth Proportional to 86,761.83, 119,730.48 and 48,520.95

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Solution

The fourth proportional to 86,761.83, 119,730.48 and 48,520.95 is: 66,958.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,761.83 : 119,730.48 = 48,520.95 : x
  2. Step 2: Convert to fraction form
    86,761.83/119,730.48 = 48,520.95/x
  3. Step 3: Cross multiply
    86,761.83x = 119,730.48 × 48,520.95
  4. Step 4: Simplify right side
    86,761.83x = 5,809,436,633.56
  5. Step 5: Solve for x
    x = 5,809,436,633.56/86,761.83
  6. Step 6: Final answer
    x = 66,958.44

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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.