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Finding the Fourth Proportional to 403,863.20, 605,794.80 and 235,573.55

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Solution

The fourth proportional to 403,863.20, 605,794.80 and 235,573.55 is: 353,360.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,863.20 : 605,794.80 = 235,573.55 : x
  2. Step 2: Convert to fraction form
    403,863.20/605,794.80 = 235,573.55/x
  3. Step 3: Cross multiply
    403,863.20x = 605,794.80 × 235,573.55
  4. Step 4: Simplify right side
    403,863.20x = 142,709,231,607.54
  5. Step 5: Solve for x
    x = 142,709,231,607.54/403,863.20
  6. Step 6: Final answer
    x = 353,360.33

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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.