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Finding the Fourth Proportional to 440,920.44, 661,309.86 and 120,997.59

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Solution

The fourth proportional to 440,920.44, 661,309.86 and 120,997.59 is: 181,476.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,920.44 : 661,309.86 = 120,997.59 : x
  2. Step 2: Convert to fraction form
    440,920.44/661,309.86 = 120,997.59/x
  3. Step 3: Cross multiply
    440,920.44x = 661,309.86 × 120,997.59
  4. Step 4: Simplify right side
    440,920.44x = 80,016,899,303.24
  5. Step 5: Solve for x
    x = 80,016,899,303.24/440,920.44
  6. Step 6: Final answer
    x = 181,476.96

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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.