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Finding the Fourth Proportional to 404,643.10, 606,879.60 and 204,775.60

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Solution

The fourth proportional to 404,643.10, 606,879.60 and 204,775.60 is: 307,120.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,643.10 : 606,879.60 = 204,775.60 : x
  2. Step 2: Convert to fraction form
    404,643.10/606,879.60 = 204,775.60/x
  3. Step 3: Cross multiply
    404,643.10x = 606,879.60 × 204,775.60
  4. Step 4: Simplify right side
    404,643.10x = 124,274,134,217.76
  5. Step 5: Solve for x
    x = 124,274,134,217.76/404,643.10
  6. Step 6: Final answer
    x = 307,120.36

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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.