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Finding the Fourth Proportional to 609,816.20, 914,724.30 and 189,134.60

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Solution

The fourth proportional to 609,816.20, 914,724.30 and 189,134.60 is: 283,701.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,816.20 : 914,724.30 = 189,134.60 : x
  2. Step 2: Convert to fraction form
    609,816.20/914,724.30 = 189,134.60/x
  3. Step 3: Cross multiply
    609,816.20x = 914,724.30 × 189,134.60
  4. Step 4: Simplify right side
    609,816.20x = 173,006,014,590.78
  5. Step 5: Solve for x
    x = 173,006,014,590.78/609,816.20
  6. Step 6: Final answer
    x = 283,701.90

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Double scale
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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.