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Finding the Fourth Proportional to 1,571.26, 2,356.86 and 531.24

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Solution

The fourth proportional to 1,571.26, 2,356.86 and 531.24 is: 796.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.26 : 2,356.86 = 531.24 : x
  2. Step 2: Convert to fraction form
    1,571.26/2,356.86 = 531.24/x
  3. Step 3: Cross multiply
    1,571.26x = 2,356.86 × 531.24
  4. Step 4: Simplify right side
    1,571.26x = 1,252,058.31
  5. Step 5: Solve for x
    x = 1,252,058.31/1,571.26
  6. Step 6: Final answer
    x = 796.85

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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.