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Finding the Fourth Proportional to 23,893.88, 32,974.40 and 13,139.57

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Solution

The fourth proportional to 23,893.88, 32,974.40 and 13,139.57 is: 18,133.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,893.88 : 32,974.40 = 13,139.57 : x
  2. Step 2: Convert to fraction form
    23,893.88/32,974.40 = 13,139.57/x
  3. Step 3: Cross multiply
    23,893.88x = 32,974.40 × 13,139.57
  4. Step 4: Simplify right side
    23,893.88x = 433,269,206.44
  5. Step 5: Solve for x
    x = 433,269,206.44/23,893.88
  6. Step 6: Final answer
    x = 18,133.06

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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.