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Finding the Fourth Proportional to 100,846.53, 139,167.09 and 55,523.61

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Solution

The fourth proportional to 100,846.53, 139,167.09 and 55,523.61 is: 76,621.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,846.53 : 139,167.09 = 55,523.61 : x
  2. Step 2: Convert to fraction form
    100,846.53/139,167.09 = 55,523.61/x
  3. Step 3: Cross multiply
    100,846.53x = 139,167.09 × 55,523.61
  4. Step 4: Simplify right side
    100,846.53x = 7,727,059,229.99
  5. Step 5: Solve for x
    x = 7,727,059,229.99/100,846.53
  6. Step 6: Final answer
    x = 76,621.96

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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.