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Finding the Fourth Proportional to 5,187.99, 7,784.26 and 2,722.23

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Solution

The fourth proportional to 5,187.99, 7,784.26 and 2,722.23 is: 4,084.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.99 : 7,784.26 = 2,722.23 : x
  2. Step 2: Convert to fraction form
    5,187.99/7,784.26 = 2,722.23/x
  3. Step 3: Cross multiply
    5,187.99x = 7,784.26 × 2,722.23
  4. Step 4: Simplify right side
    5,187.99x = 21,190,493.57
  5. Step 5: Solve for x
    x = 21,190,493.57/5,187.99
  6. Step 6: Final answer
    x = 4,084.53

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1.5x scale

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.