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Finding the Fourth Proportional to 609,723.80, 914,585.70 and 189,128.60

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Solution

The fourth proportional to 609,723.80, 914,585.70 and 189,128.60 is: 283,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,723.80 : 914,585.70 = 189,128.60 : x
  2. Step 2: Convert to fraction form
    609,723.80/914,585.70 = 189,128.60/x
  3. Step 3: Cross multiply
    609,723.80x = 914,585.70 × 189,128.60
  4. Step 4: Simplify right side
    609,723.80x = 172,974,313,021.02
  5. Step 5: Solve for x
    x = 172,974,313,021.02/609,723.80
  6. Step 6: Final answer
    x = 283,692.90

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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.