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Finding the Fourth Proportional to 351,057.36, 484,458.09 and 189,912.36

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Solution

The fourth proportional to 351,057.36, 484,458.09 and 189,912.36 is: 262,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,057.36 : 484,458.09 = 189,912.36 : x
  2. Step 2: Convert to fraction form
    351,057.36/484,458.09 = 189,912.36/x
  3. Step 3: Cross multiply
    351,057.36x = 484,458.09 × 189,912.36
  4. Step 4: Simplify right side
    351,057.36x = 92,004,579,192.99
  5. Step 5: Solve for x
    x = 92,004,579,192.99/351,057.36
  6. Step 6: Final answer
    x = 262,078.48

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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.