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Finding the Fourth Proportional to 543,256.20, 814,961.10 and 169,240.20

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Solution

The fourth proportional to 543,256.20, 814,961.10 and 169,240.20 is: 253,884.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,256.20 : 814,961.10 = 169,240.20 : x
  2. Step 2: Convert to fraction form
    543,256.20/814,961.10 = 169,240.20/x
  3. Step 3: Cross multiply
    543,256.20x = 814,961.10 × 169,240.20
  4. Step 4: Simplify right side
    543,256.20x = 137,924,179,556.22
  5. Step 5: Solve for x
    x = 137,924,179,556.22/543,256.20
  6. Step 6: Final answer
    x = 253,884.23

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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.