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Finding the Fourth Proportional to 57,704.40, 86,556.60 and 53,233.20

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Solution

The fourth proportional to 57,704.40, 86,556.60 and 53,233.20 is: 79,849.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,704.40 : 86,556.60 = 53,233.20 : x
  2. Step 2: Convert to fraction form
    57,704.40/86,556.60 = 53,233.20/x
  3. Step 3: Cross multiply
    57,704.40x = 86,556.60 × 53,233.20
  4. Step 4: Simplify right side
    57,704.40x = 4,607,684,799.12
  5. Step 5: Solve for x
    x = 4,607,684,799.12/57,704.40
  6. Step 6: Final answer
    x = 79,849.80

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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.