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Finding the Fourth Proportional to 13,741.55, 18,963.42 and 7,453.92

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Solution

The fourth proportional to 13,741.55, 18,963.42 and 7,453.92 is: 10,286.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,741.55 : 18,963.42 = 7,453.92 : x
  2. Step 2: Convert to fraction form
    13,741.55/18,963.42 = 7,453.92/x
  3. Step 3: Cross multiply
    13,741.55x = 18,963.42 × 7,453.92
  4. Step 4: Simplify right side
    13,741.55x = 141,351,858.77
  5. Step 5: Solve for x
    x = 141,351,858.77/13,741.55
  6. Step 6: Final answer
    x = 10,286.46

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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.