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Finding the Fourth Proportional to 19,462.71, 26,859.07 and 11,908.90

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Solution

The fourth proportional to 19,462.71, 26,859.07 and 11,908.90 is: 16,434.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,462.71 : 26,859.07 = 11,908.90 : x
  2. Step 2: Convert to fraction form
    19,462.71/26,859.07 = 11,908.90/x
  3. Step 3: Cross multiply
    19,462.71x = 26,859.07 × 11,908.90
  4. Step 4: Simplify right side
    19,462.71x = 319,861,918.15
  5. Step 5: Solve for x
    x = 319,861,918.15/19,462.71
  6. Step 6: Final answer
    x = 16,434.61

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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.