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Finding the Fourth Proportional to 530,183.26, 731,631 and 288,466.80

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Solution

The fourth proportional to 530,183.26, 731,631 and 288,466.80 is: 398,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,183.26 : 731,631 = 288,466.80 : x
  2. Step 2: Convert to fraction form
    530,183.26/731,631 = 288,466.80/x
  3. Step 3: Cross multiply
    530,183.26x = 731,631 × 288,466.80
  4. Step 4: Simplify right side
    530,183.26x = 211,051,253,350.80
  5. Step 5: Solve for x
    x = 211,051,253,350.80/530,183.26
  6. Step 6: Final answer
    x = 398,072.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.