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Finding the Fourth Proportional to 639,339.60, 959,167.26 and 190,058.56

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Solution

The fourth proportional to 639,339.60, 959,167.26 and 190,058.56 is: 285,134.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,339.60 : 959,167.26 = 190,058.56 : x
  2. Step 2: Convert to fraction form
    639,339.60/959,167.26 = 190,058.56/x
  3. Step 3: Cross multiply
    639,339.60x = 959,167.26 × 190,058.56
  4. Step 4: Simplify right side
    639,339.60x = 182,297,948,234.75
  5. Step 5: Solve for x
    x = 182,297,948,234.75/639,339.60
  6. Step 6: Final answer
    x = 285,134.77

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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.