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Finding the Fourth Proportional to 71,251.52, 106,883.52 and 18,661.04

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Solution

The fourth proportional to 71,251.52, 106,883.52 and 18,661.04 is: 27,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,251.52 : 106,883.52 = 18,661.04 : x
  2. Step 2: Convert to fraction form
    71,251.52/106,883.52 = 18,661.04/x
  3. Step 3: Cross multiply
    71,251.52x = 106,883.52 × 18,661.04
  4. Step 4: Simplify right side
    71,251.52x = 1,994,557,642.06
  5. Step 5: Solve for x
    x = 1,994,557,642.06/71,251.52
  6. Step 6: Final answer
    x = 27,993.19

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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.