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Finding the Fourth Proportional to 29,682.75, 40,962.20 and 16,434.75

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Solution

The fourth proportional to 29,682.75, 40,962.20 and 16,434.75 is: 22,679.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,682.75 : 40,962.20 = 16,434.75 : x
  2. Step 2: Convert to fraction form
    29,682.75/40,962.20 = 16,434.75/x
  3. Step 3: Cross multiply
    29,682.75x = 40,962.20 × 16,434.75
  4. Step 4: Simplify right side
    29,682.75x = 673,203,434.28
  5. Step 5: Solve for x
    x = 673,203,434.28/29,682.75
  6. Step 6: Final answer
    x = 22,679.96

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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.