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Finding the Fourth Proportional to 185,912.16, 278,818.44 and 80,706.12

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Solution

The fourth proportional to 185,912.16, 278,818.44 and 80,706.12 is: 121,037.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,912.16 : 278,818.44 = 80,706.12 : x
  2. Step 2: Convert to fraction form
    185,912.16/278,818.44 = 80,706.12/x
  3. Step 3: Cross multiply
    185,912.16x = 278,818.44 × 80,706.12
  4. Step 4: Simplify right side
    185,912.16x = 22,502,354,476.85
  5. Step 5: Solve for x
    x = 22,502,354,476.85/185,912.16
  6. Step 6: Final answer
    x = 121,037.56

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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.