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Finding the Fourth Proportional to 403,619.03, 605,132.09 and 193,404.59

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Solution

The fourth proportional to 403,619.03, 605,132.09 and 193,404.59 is: 289,964.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,619.03 : 605,132.09 = 193,404.59 : x
  2. Step 2: Convert to fraction form
    403,619.03/605,132.09 = 193,404.59/x
  3. Step 3: Cross multiply
    403,619.03x = 605,132.09 × 193,404.59
  4. Step 4: Simplify right side
    403,619.03x = 117,035,324,308.10
  5. Step 5: Solve for x
    x = 117,035,324,308.10/403,619.03
  6. Step 6: Final answer
    x = 289,964.83

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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.