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Finding the Fourth Proportional to 542,566.20, 813,618.90 and 262,169.40

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Solution

The fourth proportional to 542,566.20, 813,618.90 and 262,169.40 is: 393,142.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,566.20 : 813,618.90 = 262,169.40 : x
  2. Step 2: Convert to fraction form
    542,566.20/813,618.90 = 262,169.40/x
  3. Step 3: Cross multiply
    542,566.20x = 813,618.90 × 262,169.40
  4. Step 4: Simplify right side
    542,566.20x = 213,305,978,841.66
  5. Step 5: Solve for x
    x = 213,305,978,841.66/542,566.20
  6. Step 6: Final answer
    x = 393,142.77

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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.