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Finding the Fourth Proportional to 567,136.40, 850,704.60 and 425,418.80

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Solution

The fourth proportional to 567,136.40, 850,704.60 and 425,418.80 is: 638,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,136.40 : 850,704.60 = 425,418.80 : x
  2. Step 2: Convert to fraction form
    567,136.40/850,704.60 = 425,418.80/x
  3. Step 3: Cross multiply
    567,136.40x = 850,704.60 × 425,418.80
  4. Step 4: Simplify right side
    567,136.40x = 361,905,730,086.48
  5. Step 5: Solve for x
    x = 361,905,730,086.48/567,136.40
  6. Step 6: Final answer
    x = 638,128.20

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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.