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Finding the Fourth Proportional to 440,575.25, 660,863.37 and 120,729.83

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Solution

The fourth proportional to 440,575.25, 660,863.37 and 120,729.83 is: 181,094.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,575.25 : 660,863.37 = 120,729.83 : x
  2. Step 2: Convert to fraction form
    440,575.25/660,863.37 = 120,729.83/x
  3. Step 3: Cross multiply
    440,575.25x = 660,863.37 × 120,729.83
  4. Step 4: Simplify right side
    440,575.25x = 79,785,922,313.33
  5. Step 5: Solve for x
    x = 79,785,922,313.33/440,575.25
  6. Step 6: Final answer
    x = 181,094.88

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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.