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Finding the Fourth Proportional to 18,563.97, 25,608.93 and 13,261.87

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Solution

The fourth proportional to 18,563.97, 25,608.93 and 13,261.87 is: 18,294.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.97 : 25,608.93 = 13,261.87 : x
  2. Step 2: Convert to fraction form
    18,563.97/25,608.93 = 13,261.87/x
  3. Step 3: Cross multiply
    18,563.97x = 25,608.93 × 13,261.87
  4. Step 4: Simplify right side
    18,563.97x = 339,622,213.33
  5. Step 5: Solve for x
    x = 339,622,213.33/18,563.97
  6. Step 6: Final answer
    x = 18,294.69

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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.