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Finding the Fourth Proportional to 493,529.13, 681,057.66 and 275,739.48

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Solution

The fourth proportional to 493,529.13, 681,057.66 and 275,739.48 is: 380,513.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,529.13 : 681,057.66 = 275,739.48 : x
  2. Step 2: Convert to fraction form
    493,529.13/681,057.66 = 275,739.48/x
  3. Step 3: Cross multiply
    493,529.13x = 681,057.66 × 275,739.48
  4. Step 4: Simplify right side
    493,529.13x = 187,794,485,018.42
  5. Step 5: Solve for x
    x = 187,794,485,018.42/493,529.13
  6. Step 6: Final answer
    x = 380,513.48

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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.