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Finding the Fourth Proportional to 403,284.80, 605,364.60 and 226,137.80

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Solution

The fourth proportional to 403,284.80, 605,364.60 and 226,137.80 is: 339,451.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,284.80 : 605,364.60 = 226,137.80 : x
  2. Step 2: Convert to fraction form
    403,284.80/605,364.60 = 226,137.80/x
  3. Step 3: Cross multiply
    403,284.80x = 605,364.60 × 226,137.80
  4. Step 4: Simplify right side
    403,284.80x = 136,895,818,841.88
  5. Step 5: Solve for x
    x = 136,895,818,841.88/403,284.80
  6. Step 6: Final answer
    x = 339,451.97

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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.