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Finding the Fourth Proportional to 39,791.40, 59,694.30 and 16,420.20

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Solution

The fourth proportional to 39,791.40, 59,694.30 and 16,420.20 is: 24,633.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.40 : 59,694.30 = 16,420.20 : x
  2. Step 2: Convert to fraction form
    39,791.40/59,694.30 = 16,420.20/x
  3. Step 3: Cross multiply
    39,791.40x = 59,694.30 × 16,420.20
  4. Step 4: Simplify right side
    39,791.40x = 980,192,344.86
  5. Step 5: Solve for x
    x = 980,192,344.86/39,791.40
  6. Step 6: Final answer
    x = 24,633.27

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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.