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Finding the Fourth Proportional to 18,906.33, 26,086.28 and 15,892.91

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Solution

The fourth proportional to 18,906.33, 26,086.28 and 15,892.91 is: 21,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.33 : 26,086.28 = 15,892.91 : x
  2. Step 2: Convert to fraction form
    18,906.33/26,086.28 = 15,892.91/x
  3. Step 3: Cross multiply
    18,906.33x = 26,086.28 × 15,892.91
  4. Step 4: Simplify right side
    18,906.33x = 414,586,690.38
  5. Step 5: Solve for x
    x = 414,586,690.38/18,906.33
  6. Step 6: Final answer
    x = 21,928.46

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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.