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Finding the Fourth Proportional to 86,760.83, 119,729.11 and 48,519.95

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Solution

The fourth proportional to 86,760.83, 119,729.11 and 48,519.95 is: 66,957.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,760.83 : 119,729.11 = 48,519.95 : x
  2. Step 2: Convert to fraction form
    86,760.83/119,729.11 = 48,519.95/x
  3. Step 3: Cross multiply
    86,760.83x = 119,729.11 × 48,519.95
  4. Step 4: Simplify right side
    86,760.83x = 5,809,250,188.14
  5. Step 5: Solve for x
    x = 5,809,250,188.14/86,760.83
  6. Step 6: Final answer
    x = 66,957.06

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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.