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Finding the Fourth Proportional to 39,406.60, 59,109.90 and 11,704.60

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Solution

The fourth proportional to 39,406.60, 59,109.90 and 11,704.60 is: 17,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,406.60 : 59,109.90 = 11,704.60 : x
  2. Step 2: Convert to fraction form
    39,406.60/59,109.90 = 11,704.60/x
  3. Step 3: Cross multiply
    39,406.60x = 59,109.90 × 11,704.60
  4. Step 4: Simplify right side
    39,406.60x = 691,857,735.54
  5. Step 5: Solve for x
    x = 691,857,735.54/39,406.60
  6. Step 6: Final answer
    x = 17,556.90

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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.