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Finding the Fourth Proportional to 543,136.20, 814,704.30 and 342,369.60

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Solution

The fourth proportional to 543,136.20, 814,704.30 and 342,369.60 is: 513,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,136.20 : 814,704.30 = 342,369.60 : x
  2. Step 2: Convert to fraction form
    543,136.20/814,704.30 = 342,369.60/x
  3. Step 3: Cross multiply
    543,136.20x = 814,704.30 × 342,369.60
  4. Step 4: Simplify right side
    543,136.20x = 278,929,985,309.28
  5. Step 5: Solve for x
    x = 278,929,985,309.28/543,136.20
  6. Step 6: Final answer
    x = 513,554.40

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Double scale
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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.