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Finding the Fourth Proportional to 403,718.60, 605,359.20 and 166,793.60

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Solution

The fourth proportional to 403,718.60, 605,359.20 and 166,793.60 is: 250,100.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,718.60 : 605,359.20 = 166,793.60 : x
  2. Step 2: Convert to fraction form
    403,718.60/605,359.20 = 166,793.60/x
  3. Step 3: Cross multiply
    403,718.60x = 605,359.20 × 166,793.60
  4. Step 4: Simplify right side
    403,718.60x = 100,970,040,261.12
  5. Step 5: Solve for x
    x = 100,970,040,261.12/403,718.60
  6. Step 6: Final answer
    x = 250,100.05

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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.