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Finding the Fourth Proportional to 647,072.10, 970,608.15 and 367,136.10

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Solution

The fourth proportional to 647,072.10, 970,608.15 and 367,136.10 is: 550,704.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,072.10 : 970,608.15 = 367,136.10 : x
  2. Step 2: Convert to fraction form
    647,072.10/970,608.15 = 367,136.10/x
  3. Step 3: Cross multiply
    647,072.10x = 970,608.15 × 367,136.10
  4. Step 4: Simplify right side
    647,072.10x = 356,345,290,819.22
  5. Step 5: Solve for x
    x = 356,345,290,819.22/647,072.10
  6. Step 6: Final answer
    x = 550,704.15

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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.