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Finding the Fourth Proportional to 639,563.25, 959,257.39 and 190,353.45

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Solution

The fourth proportional to 639,563.25, 959,257.39 and 190,353.45 is: 285,504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,563.25 : 959,257.39 = 190,353.45 : x
  2. Step 2: Convert to fraction form
    639,563.25/959,257.39 = 190,353.45/x
  3. Step 3: Cross multiply
    639,563.25x = 959,257.39 × 190,353.45
  4. Step 4: Simplify right side
    639,563.25x = 182,597,948,352.33
  5. Step 5: Solve for x
    x = 182,597,948,352.33/639,563.25
  6. Step 6: Final answer
    x = 285,504.13

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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.