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Finding the Fourth Proportional to 111,969.88, 167,560.19 and 69,869.79

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Solution

The fourth proportional to 111,969.88, 167,560.19 and 69,869.79 is: 104,558.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,969.88 : 167,560.19 = 69,869.79 : x
  2. Step 2: Convert to fraction form
    111,969.88/167,560.19 = 69,869.79/x
  3. Step 3: Cross multiply
    111,969.88x = 167,560.19 × 69,869.79
  4. Step 4: Simplify right side
    111,969.88x = 11,707,395,593.34
  5. Step 5: Solve for x
    x = 11,707,395,593.34/111,969.88
  6. Step 6: Final answer
    x = 104,558.43

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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.