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Finding the Fourth Proportional to 111,995.42, 167,990.06 and 48,815.51

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Solution

The fourth proportional to 111,995.42, 167,990.06 and 48,815.51 is: 73,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,995.42 : 167,990.06 = 48,815.51 : x
  2. Step 2: Convert to fraction form
    111,995.42/167,990.06 = 48,815.51/x
  3. Step 3: Cross multiply
    111,995.42x = 167,990.06 × 48,815.51
  4. Step 4: Simplify right side
    111,995.42x = 8,200,519,735.92
  5. Step 5: Solve for x
    x = 8,200,519,735.92/111,995.42
  6. Step 6: Final answer
    x = 73,221.92

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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.