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Finding the Fourth Proportional to 476,105.73, 714,162.78 and 121,120.13

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Solution

The fourth proportional to 476,105.73, 714,162.78 and 121,120.13 is: 181,681.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,105.73 : 714,162.78 = 121,120.13 : x
  2. Step 2: Convert to fraction form
    476,105.73/714,162.78 = 121,120.13/x
  3. Step 3: Cross multiply
    476,105.73x = 714,162.78 × 121,120.13
  4. Step 4: Simplify right side
    476,105.73x = 86,499,485,183.95
  5. Step 5: Solve for x
    x = 86,499,485,183.95/476,105.73
  6. Step 6: Final answer
    x = 181,681.25

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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.