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Finding the Fourth Proportional to 39,489.80, 59,213.10 and 16,089.80

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Solution

The fourth proportional to 39,489.80, 59,213.10 and 16,089.80 is: 24,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,489.80 : 59,213.10 = 16,089.80 : x
  2. Step 2: Convert to fraction form
    39,489.80/59,213.10 = 16,089.80/x
  3. Step 3: Cross multiply
    39,489.80x = 59,213.10 × 16,089.80
  4. Step 4: Simplify right side
    39,489.80x = 952,726,936.38
  5. Step 5: Solve for x
    x = 952,726,936.38/39,489.80
  6. Step 6: Final answer
    x = 24,125.90

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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.