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Finding the Fourth Proportional to 541,836.80, 811,372.80 and 431,244.80

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Solution

The fourth proportional to 541,836.80, 811,372.80 and 431,244.80 is: 645,766.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,836.80 : 811,372.80 = 431,244.80 : x
  2. Step 2: Convert to fraction form
    541,836.80/811,372.80 = 431,244.80/x
  3. Step 3: Cross multiply
    541,836.80x = 811,372.80 × 431,244.80
  4. Step 4: Simplify right side
    541,836.80x = 349,900,300,861.44
  5. Step 5: Solve for x
    x = 349,900,300,861.44/541,836.80
  6. Step 6: Final answer
    x = 645,766.96

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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.