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Finding the Fourth Proportional to 111,956.31, 167,540.05 and 69,856.22

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Solution

The fourth proportional to 111,956.31, 167,540.05 and 69,856.22 is: 104,538.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,956.31 : 167,540.05 = 69,856.22 : x
  2. Step 2: Convert to fraction form
    111,956.31/167,540.05 = 69,856.22/x
  3. Step 3: Cross multiply
    111,956.31x = 167,540.05 × 69,856.22
  4. Step 4: Simplify right side
    111,956.31x = 11,703,714,704.84
  5. Step 5: Solve for x
    x = 11,703,714,704.84/111,956.31
  6. Step 6: Final answer
    x = 104,538.23

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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.