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Finding the Fourth Proportional to 530,213.20, 795,319.80 and 411,969.40

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Solution

The fourth proportional to 530,213.20, 795,319.80 and 411,969.40 is: 617,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,213.20 : 795,319.80 = 411,969.40 : x
  2. Step 2: Convert to fraction form
    530,213.20/795,319.80 = 411,969.40/x
  3. Step 3: Cross multiply
    530,213.20x = 795,319.80 × 411,969.40
  4. Step 4: Simplify right side
    530,213.20x = 327,647,420,814.12
  5. Step 5: Solve for x
    x = 327,647,420,814.12/530,213.20
  6. Step 6: Final answer
    x = 617,954.10

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Similar ratio
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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.