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Finding the Fourth Proportional to 203,359.70, 305,212.35 and 163,961.30

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Solution

The fourth proportional to 203,359.70, 305,212.35 and 163,961.30 is: 246,081.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,359.70 : 305,212.35 = 163,961.30 : x
  2. Step 2: Convert to fraction form
    203,359.70/305,212.35 = 163,961.30/x
  3. Step 3: Cross multiply
    203,359.70x = 305,212.35 × 163,961.30
  4. Step 4: Simplify right side
    203,359.70x = 50,043,013,682.06
  5. Step 5: Solve for x
    x = 50,043,013,682.06/203,359.70
  6. Step 6: Final answer
    x = 246,081.27

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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.