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Finding the Fourth Proportional to 619,012.68, 928,519.32 and 408,601.44

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Solution

The fourth proportional to 619,012.68, 928,519.32 and 408,601.44 is: 612,902.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,012.68 : 928,519.32 = 408,601.44 : x
  2. Step 2: Convert to fraction form
    619,012.68/928,519.32 = 408,601.44/x
  3. Step 3: Cross multiply
    619,012.68x = 928,519.32 × 408,601.44
  4. Step 4: Simplify right side
    619,012.68x = 379,394,331,219.82
  5. Step 5: Solve for x
    x = 379,394,331,219.82/619,012.68
  6. Step 6: Final answer
    x = 612,902.36

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1.5x scale

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.