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Finding the Fourth Proportional to 500,716.92, 751,076.82 and 126,739.56

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Solution

The fourth proportional to 500,716.92, 751,076.82 and 126,739.56 is: 190,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,716.92 : 751,076.82 = 126,739.56 : x
  2. Step 2: Convert to fraction form
    500,716.92/751,076.82 = 126,739.56/x
  3. Step 3: Cross multiply
    500,716.92x = 751,076.82 × 126,739.56
  4. Step 4: Simplify right side
    500,716.92x = 95,191,145,693.00
  5. Step 5: Solve for x
    x = 95,191,145,693.00/500,716.92
  6. Step 6: Final answer
    x = 190,109.70

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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.