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Finding the Fourth Proportional to 18,791.24, 25,933.66 and 10,407.74

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Solution

The fourth proportional to 18,791.24, 25,933.66 and 10,407.74 is: 14,363.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.24 : 25,933.66 = 10,407.74 : x
  2. Step 2: Convert to fraction form
    18,791.24/25,933.66 = 10,407.74/x
  3. Step 3: Cross multiply
    18,791.24x = 25,933.66 × 10,407.74
  4. Step 4: Simplify right side
    18,791.24x = 269,910,790.53
  5. Step 5: Solve for x
    x = 269,910,790.53/18,791.24
  6. Step 6: Final answer
    x = 14,363.65

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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.