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Finding the Fourth Proportional to 111,114.99, 166,680.99 and 47,936.61

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Solution

The fourth proportional to 111,114.99, 166,680.99 and 47,936.61 is: 71,908.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,114.99 : 166,680.99 = 47,936.61 : x
  2. Step 2: Convert to fraction form
    111,114.99/166,680.99 = 47,936.61/x
  3. Step 3: Cross multiply
    111,114.99x = 166,680.99 × 47,936.61
  4. Step 4: Simplify right side
    111,114.99x = 7,990,121,612.04
  5. Step 5: Solve for x
    x = 7,990,121,612.04/111,114.99
  6. Step 6: Final answer
    x = 71,908.58

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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.