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Finding the Fourth Proportional to 111,976.28, 154,527.24 and 61,675.28

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Solution

The fourth proportional to 111,976.28, 154,527.24 and 61,675.28 is: 85,111.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,976.28 : 154,527.24 = 61,675.28 : x
  2. Step 2: Convert to fraction form
    111,976.28/154,527.24 = 61,675.28/x
  3. Step 3: Cross multiply
    111,976.28x = 154,527.24 × 61,675.28
  4. Step 4: Simplify right side
    111,976.28x = 9,530,510,794.63
  5. Step 5: Solve for x
    x = 9,530,510,794.63/111,976.28
  6. Step 6: Final answer
    x = 85,111.87

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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.