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Finding the Fourth Proportional to 23,978.05, 33,083.21 and 13,629.66

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Solution

The fourth proportional to 23,978.05, 33,083.21 and 13,629.66 is: 18,805.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,978.05 : 33,083.21 = 13,629.66 : x
  2. Step 2: Convert to fraction form
    23,978.05/33,083.21 = 13,629.66/x
  3. Step 3: Cross multiply
    23,978.05x = 33,083.21 × 13,629.66
  4. Step 4: Simplify right side
    23,978.05x = 450,912,904.01
  5. Step 5: Solve for x
    x = 450,912,904.01/23,978.05
  6. Step 6: Final answer
    x = 18,805.24

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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.