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Finding the Fourth Proportional to 639,372.76, 959,058.87 and 190,091.68

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Solution

The fourth proportional to 639,372.76, 959,058.87 and 190,091.68 is: 285,137.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,372.76 : 959,058.87 = 190,091.68 : x
  2. Step 2: Convert to fraction form
    639,372.76/959,058.87 = 190,091.68/x
  3. Step 3: Cross multiply
    639,372.76x = 959,058.87 × 190,091.68
  4. Step 4: Simplify right side
    639,372.76x = 182,309,111,817.20
  5. Step 5: Solve for x
    x = 182,309,111,817.20/639,372.76
  6. Step 6: Final answer
    x = 285,137.44

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Similar ratio
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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.