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Finding the Fourth Proportional to 111,976.62, 154,527.74 and 61,675.62

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Solution

The fourth proportional to 111,976.62, 154,527.74 and 61,675.62 is: 85,112.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,976.62 : 154,527.74 = 61,675.62 : x
  2. Step 2: Convert to fraction form
    111,976.62/154,527.74 = 61,675.62/x
  3. Step 3: Cross multiply
    111,976.62x = 154,527.74 × 61,675.62
  4. Step 4: Simplify right side
    111,976.62x = 9,530,594,171.70
  5. Step 5: Solve for x
    x = 9,530,594,171.70/111,976.62
  6. Step 6: Final answer
    x = 85,112.36

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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.