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Finding the Fourth Proportional to 619,306.40, 929,823.60 and 396,048.80

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Solution

The fourth proportional to 619,306.40, 929,823.60 and 396,048.80 is: 594,625.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,306.40 : 929,823.60 = 396,048.80 : x
  2. Step 2: Convert to fraction form
    619,306.40/929,823.60 = 396,048.80/x
  3. Step 3: Cross multiply
    619,306.40x = 929,823.60 × 396,048.80
  4. Step 4: Simplify right side
    619,306.40x = 368,255,520,991.68
  5. Step 5: Solve for x
    x = 368,255,520,991.68/619,306.40
  6. Step 6: Final answer
    x = 594,625.73

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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.