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Finding the Fourth Proportional to 543,326.20, 814,406.10 and 206,236.60

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Solution

The fourth proportional to 543,326.20, 814,406.10 and 206,236.60 is: 309,133.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,326.20 : 814,406.10 = 206,236.60 : x
  2. Step 2: Convert to fraction form
    543,326.20/814,406.10 = 206,236.60/x
  3. Step 3: Cross multiply
    543,326.20x = 814,406.10 × 206,236.60
  4. Step 4: Simplify right side
    543,326.20x = 167,960,345,083.26
  5. Step 5: Solve for x
    x = 167,960,345,083.26/543,326.20
  6. Step 6: Final answer
    x = 309,133.53

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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.