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Finding the Fourth Proportional to 30,391.37, 41,940.14 and 16,962.62

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Solution

The fourth proportional to 30,391.37, 41,940.14 and 16,962.62 is: 23,408.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.37 : 41,940.14 = 16,962.62 : x
  2. Step 2: Convert to fraction form
    30,391.37/41,940.14 = 16,962.62/x
  3. Step 3: Cross multiply
    30,391.37x = 41,940.14 × 16,962.62
  4. Step 4: Simplify right side
    30,391.37x = 711,414,363.05
  5. Step 5: Solve for x
    x = 711,414,363.05/30,391.37
  6. Step 6: Final answer
    x = 23,408.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.