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Finding the Fourth Proportional to 403,672.20, 605,216.70 and 226,233.60

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Solution

The fourth proportional to 403,672.20, 605,216.70 and 226,233.60 is: 339,186.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,672.20 : 605,216.70 = 226,233.60 : x
  2. Step 2: Convert to fraction form
    403,672.20/605,216.70 = 226,233.60/x
  3. Step 3: Cross multiply
    403,672.20x = 605,216.70 × 226,233.60
  4. Step 4: Simplify right side
    403,672.20x = 136,920,352,821.12
  5. Step 5: Solve for x
    x = 136,920,352,821.12/403,672.20
  6. Step 6: Final answer
    x = 339,186.98

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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.