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Finding the Fourth Proportional to 541,317.20, 811,975.80 and 512,286.80

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Solution

The fourth proportional to 541,317.20, 811,975.80 and 512,286.80 is: 768,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,317.20 : 811,975.80 = 512,286.80 : x
  2. Step 2: Convert to fraction form
    541,317.20/811,975.80 = 512,286.80/x
  3. Step 3: Cross multiply
    541,317.20x = 811,975.80 × 512,286.80
  4. Step 4: Simplify right side
    541,317.20x = 415,964,484,259.44
  5. Step 5: Solve for x
    x = 415,964,484,259.44/541,317.20
  6. Step 6: Final answer
    x = 768,430.20

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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.