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Finding the Fourth Proportional to 19,806.62, 27,333.11 and 10,854.47

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Solution

The fourth proportional to 19,806.62, 27,333.11 and 10,854.47 is: 14,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,806.62 : 27,333.11 = 10,854.47 : x
  2. Step 2: Convert to fraction form
    19,806.62/27,333.11 = 10,854.47/x
  3. Step 3: Cross multiply
    19,806.62x = 27,333.11 × 10,854.47
  4. Step 4: Simplify right side
    19,806.62x = 296,686,517.97
  5. Step 5: Solve for x
    x = 296,686,517.97/19,806.62
  6. Step 6: Final answer
    x = 14,979.16

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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.