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Finding the Fourth Proportional to 18,207.79, 27,311.77 and 6,361.51

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Solution

The fourth proportional to 18,207.79, 27,311.77 and 6,361.51 is: 9,542.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207.79 : 27,311.77 = 6,361.51 : x
  2. Step 2: Convert to fraction form
    18,207.79/27,311.77 = 6,361.51/x
  3. Step 3: Cross multiply
    18,207.79x = 27,311.77 × 6,361.51
  4. Step 4: Simplify right side
    18,207.79x = 173,744,066.17
  5. Step 5: Solve for x
    x = 173,744,066.17/18,207.79
  6. Step 6: Final answer
    x = 9,542.29

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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.