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Finding the Fourth Proportional to 18,889.97, 26,069.72 and 10,934.96

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Solution

The fourth proportional to 18,889.97, 26,069.72 and 10,934.96 is: 15,091.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.97 : 26,069.72 = 10,934.96 : x
  2. Step 2: Convert to fraction form
    18,889.97/26,069.72 = 10,934.96/x
  3. Step 3: Cross multiply
    18,889.97x = 26,069.72 × 10,934.96
  4. Step 4: Simplify right side
    18,889.97x = 285,071,160.39
  5. Step 5: Solve for x
    x = 285,071,160.39/18,889.97
  6. Step 6: Final answer
    x = 15,091.14

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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.