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Finding the Fourth Proportional to 446,620.88, 669,998.28 and 131,040.56

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Solution

The fourth proportional to 446,620.88, 669,998.28 and 131,040.56 is: 196,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,620.88 : 669,998.28 = 131,040.56 : x
  2. Step 2: Convert to fraction form
    446,620.88/669,998.28 = 131,040.56/x
  3. Step 3: Cross multiply
    446,620.88x = 669,998.28 × 131,040.56
  4. Step 4: Simplify right side
    446,620.88x = 87,796,949,810.24
  5. Step 5: Solve for x
    x = 87,796,949,810.24/446,620.88
  6. Step 6: Final answer
    x = 196,580.49

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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.