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Finding the Fourth Proportional to 579,843.56, 800,190.60 and 321,725.18

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Solution

The fourth proportional to 579,843.56, 800,190.60 and 321,725.18 is: 443,984.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,843.56 : 800,190.60 = 321,725.18 : x
  2. Step 2: Convert to fraction form
    579,843.56/800,190.60 = 321,725.18/x
  3. Step 3: Cross multiply
    579,843.56x = 800,190.60 × 321,725.18
  4. Step 4: Simplify right side
    579,843.56x = 257,441,464,819.31
  5. Step 5: Solve for x
    x = 257,441,464,819.31/579,843.56
  6. Step 6: Final answer
    x = 443,984.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.