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Finding the Fourth Proportional to 5,471.25, 7,550.37 and 2,987.25

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Solution

The fourth proportional to 5,471.25, 7,550.37 and 2,987.25 is: 4,122.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,471.25 : 7,550.37 = 2,987.25 : x
  2. Step 2: Convert to fraction form
    5,471.25/7,550.37 = 2,987.25/x
  3. Step 3: Cross multiply
    5,471.25x = 7,550.37 × 2,987.25
  4. Step 4: Simplify right side
    5,471.25x = 22,554,842.78
  5. Step 5: Solve for x
    x = 22,554,842.78/5,471.25
  6. Step 6: Final answer
    x = 4,122.43

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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.