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Finding the Fourth Proportional to 19,198.33, 28,777.74 and 7,349.31

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Solution

The fourth proportional to 19,198.33, 28,777.74 and 7,349.31 is: 11,016.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,198.33 : 28,777.74 = 7,349.31 : x
  2. Step 2: Convert to fraction form
    19,198.33/28,777.74 = 7,349.31/x
  3. Step 3: Cross multiply
    19,198.33x = 28,777.74 × 7,349.31
  4. Step 4: Simplify right side
    19,198.33x = 211,496,532.36
  5. Step 5: Solve for x
    x = 211,496,532.36/19,198.33
  6. Step 6: Final answer
    x = 11,016.41

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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.