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Finding the Fourth Proportional to 19,218.75, 28,832.99 and 5,367.75

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Solution

The fourth proportional to 19,218.75, 28,832.99 and 5,367.75 is: 8,052.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.75 : 28,832.99 = 5,367.75 : x
  2. Step 2: Convert to fraction form
    19,218.75/28,832.99 = 5,367.75/x
  3. Step 3: Cross multiply
    19,218.75x = 28,832.99 × 5,367.75
  4. Step 4: Simplify right side
    19,218.75x = 154,768,255.23
  5. Step 5: Solve for x
    x = 154,768,255.23/19,218.75
  6. Step 6: Final answer
    x = 8,052.98

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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.