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Finding the Fourth Proportional to 542,930.40, 813,083.40 and 519,310.80

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Solution

The fourth proportional to 542,930.40, 813,083.40 and 519,310.80 is: 777,711.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,930.40 : 813,083.40 = 519,310.80 : x
  2. Step 2: Convert to fraction form
    542,930.40/813,083.40 = 519,310.80/x
  3. Step 3: Cross multiply
    542,930.40x = 813,083.40 × 519,310.80
  4. Step 4: Simplify right side
    542,930.40x = 422,242,990,920.72
  5. Step 5: Solve for x
    x = 422,242,990,920.72/542,930.40
  6. Step 6: Final answer
    x = 777,711.09

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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.