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Finding the Fourth Proportional to 609,861.20, 914,791.80 and 189,179.60

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Solution

The fourth proportional to 609,861.20, 914,791.80 and 189,179.60 is: 283,769.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,861.20 : 914,791.80 = 189,179.60 : x
  2. Step 2: Convert to fraction form
    609,861.20/914,791.80 = 189,179.60/x
  3. Step 3: Cross multiply
    609,861.20x = 914,791.80 × 189,179.60
  4. Step 4: Simplify right side
    609,861.20x = 173,059,946,807.28
  5. Step 5: Solve for x
    x = 173,059,946,807.28/609,861.20
  6. Step 6: Final answer
    x = 283,769.40

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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.