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Finding the Fourth Proportional to 36,411.80, 54,578.81 and 25,991.96

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Solution

The fourth proportional to 36,411.80, 54,578.81 and 25,991.96 is: 38,960.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,411.80 : 54,578.81 = 25,991.96 : x
  2. Step 2: Convert to fraction form
    36,411.80/54,578.81 = 25,991.96/x
  3. Step 3: Cross multiply
    36,411.80x = 54,578.81 × 25,991.96
  4. Step 4: Simplify right side
    36,411.80x = 1,418,610,038.45
  5. Step 5: Solve for x
    x = 1,418,610,038.45/36,411.80
  6. Step 6: Final answer
    x = 38,960.18

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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.