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Finding the Fourth Proportional to 609,768.70, 914,653.05 and 189,087.10

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Solution

The fourth proportional to 609,768.70, 914,653.05 and 189,087.10 is: 283,630.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,768.70 : 914,653.05 = 189,087.10 : x
  2. Step 2: Convert to fraction form
    609,768.70/914,653.05 = 189,087.10/x
  3. Step 3: Cross multiply
    609,768.70x = 914,653.05 × 189,087.10
  4. Step 4: Simplify right side
    609,768.70x = 172,949,092,730.66
  5. Step 5: Solve for x
    x = 172,949,092,730.66/609,768.70
  6. Step 6: Final answer
    x = 283,630.65

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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.