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Finding the Fourth Proportional to 54,021.96, 81,019.98 and 17,085.96

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Solution

The fourth proportional to 54,021.96, 81,019.98 and 17,085.96 is: 25,624.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,021.96 : 81,019.98 = 17,085.96 : x
  2. Step 2: Convert to fraction form
    54,021.96/81,019.98 = 17,085.96/x
  3. Step 3: Cross multiply
    54,021.96x = 81,019.98 × 17,085.96
  4. Step 4: Simplify right side
    54,021.96x = 1,384,304,137.48
  5. Step 5: Solve for x
    x = 1,384,304,137.48/54,021.96
  6. Step 6: Final answer
    x = 25,624.84

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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.