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Finding the Fourth Proportional to 17,806.84, 26,713.32 and 7,945.90

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Solution

The fourth proportional to 17,806.84, 26,713.32 and 7,945.90 is: 11,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,806.84 : 26,713.32 = 7,945.90 : x
  2. Step 2: Convert to fraction form
    17,806.84/26,713.32 = 7,945.90/x
  3. Step 3: Cross multiply
    17,806.84x = 26,713.32 × 7,945.90
  4. Step 4: Simplify right side
    17,806.84x = 212,261,369.39
  5. Step 5: Solve for x
    x = 212,261,369.39/17,806.84
  6. Step 6: Final answer
    x = 11,920.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.