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Finding the Fourth Proportional to 546,098.20, 819,147.30 and 431,936.80

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Solution

The fourth proportional to 546,098.20, 819,147.30 and 431,936.80 is: 647,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,098.20 : 819,147.30 = 431,936.80 : x
  2. Step 2: Convert to fraction form
    546,098.20/819,147.30 = 431,936.80/x
  3. Step 3: Cross multiply
    546,098.20x = 819,147.30 × 431,936.80
  4. Step 4: Simplify right side
    546,098.20x = 353,819,863,490.64
  5. Step 5: Solve for x
    x = 353,819,863,490.64/546,098.20
  6. Step 6: Final answer
    x = 647,905.20

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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.