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Finding the Fourth Proportional to 15,892.43, 21,954.43 and 12,701.64

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Solution

The fourth proportional to 15,892.43, 21,954.43 and 12,701.64 is: 17,546.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,892.43 : 21,954.43 = 12,701.64 : x
  2. Step 2: Convert to fraction form
    15,892.43/21,954.43 = 12,701.64/x
  3. Step 3: Cross multiply
    15,892.43x = 21,954.43 × 12,701.64
  4. Step 4: Simplify right side
    15,892.43x = 278,857,266.27
  5. Step 5: Solve for x
    x = 278,857,266.27/15,892.43
  6. Step 6: Final answer
    x = 17,546.55

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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.