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Finding the Fourth Proportional to 55,486.76, 83,120.13 and 25,863.80

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Solution

The fourth proportional to 55,486.76, 83,120.13 and 25,863.80 is: 38,744.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,486.76 : 83,120.13 = 25,863.80 : x
  2. Step 2: Convert to fraction form
    55,486.76/83,120.13 = 25,863.80/x
  3. Step 3: Cross multiply
    55,486.76x = 83,120.13 × 25,863.80
  4. Step 4: Simplify right side
    55,486.76x = 2,149,802,418.29
  5. Step 5: Solve for x
    x = 2,149,802,418.29/55,486.76
  6. Step 6: Final answer
    x = 38,744.42

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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.