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Finding the Fourth Proportional to 23,991.92, 33,108.90 and 13,381.28

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Solution

The fourth proportional to 23,991.92, 33,108.90 and 13,381.28 is: 18,466.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,991.92 : 33,108.90 = 13,381.28 : x
  2. Step 2: Convert to fraction form
    23,991.92/33,108.90 = 13,381.28/x
  3. Step 3: Cross multiply
    23,991.92x = 33,108.90 × 13,381.28
  4. Step 4: Simplify right side
    23,991.92x = 443,039,461.39
  5. Step 5: Solve for x
    x = 443,039,461.39/23,991.92
  6. Step 6: Final answer
    x = 18,466.19

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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.