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Finding the Fourth Proportional to 55,301.60, 82,979.40 and 25,704.20

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Solution

The fourth proportional to 55,301.60, 82,979.40 and 25,704.20 is: 38,568.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,301.60 : 82,979.40 = 25,704.20 : x
  2. Step 2: Convert to fraction form
    55,301.60/82,979.40 = 25,704.20/x
  3. Step 3: Cross multiply
    55,301.60x = 82,979.40 × 25,704.20
  4. Step 4: Simplify right side
    55,301.60x = 2,132,919,093.48
  5. Step 5: Solve for x
    x = 2,132,919,093.48/55,301.60
  6. Step 6: Final answer
    x = 38,568.85

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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.