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Finding the Fourth Proportional to 519,766.88, 777,753.53 and 306,636.90

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Solution

The fourth proportional to 519,766.88, 777,753.53 and 306,636.90 is: 458,836.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,766.88 : 777,753.53 = 306,636.90 : x
  2. Step 2: Convert to fraction form
    519,766.88/777,753.53 = 306,636.90/x
  3. Step 3: Cross multiply
    519,766.88x = 777,753.53 × 306,636.90
  4. Step 4: Simplify right side
    519,766.88x = 238,487,928,003.43
  5. Step 5: Solve for x
    x = 238,487,928,003.43/519,766.88
  6. Step 6: Final answer
    x = 458,836.33

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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.