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Finding the Fourth Proportional to 19,891.70, 27,448.66 and 11,824.71

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Solution

The fourth proportional to 19,891.70, 27,448.66 and 11,824.71 is: 16,316.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.70 : 27,448.66 = 11,824.71 : x
  2. Step 2: Convert to fraction form
    19,891.70/27,448.66 = 11,824.71/x
  3. Step 3: Cross multiply
    19,891.70x = 27,448.66 × 11,824.71
  4. Step 4: Simplify right side
    19,891.70x = 324,572,444.39
  5. Step 5: Solve for x
    x = 324,572,444.39/19,891.70
  6. Step 6: Final answer
    x = 16,316.98

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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.