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Finding the Fourth Proportional to 719,578.20, 993,077.82 and 397,317.72

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Solution

The fourth proportional to 719,578.20, 993,077.82 and 397,317.72 is: 548,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,578.20 : 993,077.82 = 397,317.72 : x
  2. Step 2: Convert to fraction form
    719,578.20/993,077.82 = 397,317.72/x
  3. Step 3: Cross multiply
    719,578.20x = 993,077.82 × 397,317.72
  4. Step 4: Simplify right side
    719,578.20x = 394,567,415,224.97
  5. Step 5: Solve for x
    x = 394,567,415,224.97/719,578.20
  6. Step 6: Final answer
    x = 548,331.53

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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.