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Finding the Fourth Proportional to 541,213.45, 811,803.37 and 257,108.44

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Solution

The fourth proportional to 541,213.45, 811,803.37 and 257,108.44 is: 385,654.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,213.45 : 811,803.37 = 257,108.44 : x
  2. Step 2: Convert to fraction form
    541,213.45/811,803.37 = 257,108.44/x
  3. Step 3: Cross multiply
    541,213.45x = 811,803.37 × 257,108.44
  4. Step 4: Simplify right side
    541,213.45x = 208,721,498,047.44
  5. Step 5: Solve for x
    x = 208,721,498,047.44/541,213.45
  6. Step 6: Final answer
    x = 385,654.68

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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.