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Finding the Fourth Proportional to 57,704.60, 86,556.90 and 38,005.40

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Solution

The fourth proportional to 57,704.60, 86,556.90 and 38,005.40 is: 57,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,704.60 : 86,556.90 = 38,005.40 : x
  2. Step 2: Convert to fraction form
    57,704.60/86,556.90 = 38,005.40/x
  3. Step 3: Cross multiply
    57,704.60x = 86,556.90 × 38,005.40
  4. Step 4: Simplify right side
    57,704.60x = 3,289,629,607.26
  5. Step 5: Solve for x
    x = 3,289,629,607.26/57,704.60
  6. Step 6: Final answer
    x = 57,008.10

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1.5x scale

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.