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Finding the Fourth Proportional to 609,739.40, 914,609.10 and 189,057.80

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Solution

The fourth proportional to 609,739.40, 914,609.10 and 189,057.80 is: 283,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,739.40 : 914,609.10 = 189,057.80 : x
  2. Step 2: Convert to fraction form
    609,739.40/914,609.10 = 189,057.80/x
  3. Step 3: Cross multiply
    609,739.40x = 914,609.10 × 189,057.80
  4. Step 4: Simplify right side
    609,739.40x = 172,913,984,305.98
  5. Step 5: Solve for x
    x = 172,913,984,305.98/609,739.40
  6. Step 6: Final answer
    x = 283,586.70

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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.