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Finding the Fourth Proportional to 639,375.70, 959,221.40 and 190,094.62

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Solution

The fourth proportional to 639,375.70, 959,221.40 and 190,094.62 is: 285,188.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,375.70 : 959,221.40 = 190,094.62 : x
  2. Step 2: Convert to fraction form
    639,375.70/959,221.40 = 190,094.62/x
  3. Step 3: Cross multiply
    639,375.70x = 959,221.40 × 190,094.62
  4. Step 4: Simplify right side
    639,375.70x = 182,342,827,528.87
  5. Step 5: Solve for x
    x = 182,342,827,528.87/639,375.70
  6. Step 6: Final answer
    x = 285,188.86

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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.