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Finding the Fourth Proportional to 403,610.20, 605,544.90 and 178,883.80

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Solution

The fourth proportional to 403,610.20, 605,544.90 and 178,883.80 is: 268,383.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,610.20 : 605,544.90 = 178,883.80 : x
  2. Step 2: Convert to fraction form
    403,610.20/605,544.90 = 178,883.80/x
  3. Step 3: Cross multiply
    403,610.20x = 605,544.90 × 178,883.80
  4. Step 4: Simplify right side
    403,610.20x = 108,322,172,782.62
  5. Step 5: Solve for x
    x = 108,322,172,782.62/403,610.20
  6. Step 6: Final answer
    x = 268,383.14

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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.