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Finding the Fourth Proportional to 106,911.56, 147,540.36 and 69,251.36

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Solution

The fourth proportional to 106,911.56, 147,540.36 and 69,251.36 is: 95,568.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,911.56 : 147,540.36 = 69,251.36 : x
  2. Step 2: Convert to fraction form
    106,911.56/147,540.36 = 69,251.36/x
  3. Step 3: Cross multiply
    106,911.56x = 147,540.36 × 69,251.36
  4. Step 4: Simplify right side
    106,911.56x = 10,217,370,584.89
  5. Step 5: Solve for x
    x = 10,217,370,584.89/106,911.56
  6. Step 6: Final answer
    x = 95,568.44

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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.