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Finding the Fourth Proportional to 23,872.80, 32,940.80 and 13,799.29

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Solution

The fourth proportional to 23,872.80, 32,940.80 and 13,799.29 is: 19,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,872.80 : 32,940.80 = 13,799.29 : x
  2. Step 2: Convert to fraction form
    23,872.80/32,940.80 = 13,799.29/x
  3. Step 3: Cross multiply
    23,872.80x = 32,940.80 × 13,799.29
  4. Step 4: Simplify right side
    23,872.80x = 454,559,652.03
  5. Step 5: Solve for x
    x = 454,559,652.03/23,872.80
  6. Step 6: Final answer
    x = 19,040.90

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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.