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Finding the Fourth Proportional to 18,888.72, 26,067.99 and 10,933.71

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Solution

The fourth proportional to 18,888.72, 26,067.99 and 10,933.71 is: 15,089.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.72 : 26,067.99 = 10,933.71 : x
  2. Step 2: Convert to fraction form
    18,888.72/26,067.99 = 10,933.71/x
  3. Step 3: Cross multiply
    18,888.72x = 26,067.99 × 10,933.71
  4. Step 4: Simplify right side
    18,888.72x = 285,019,842.94
  5. Step 5: Solve for x
    x = 285,019,842.94/18,888.72
  6. Step 6: Final answer
    x = 15,089.42

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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.