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Finding the Fourth Proportional to 13,197.45, 19,796.19 and 3,963.45

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Solution

The fourth proportional to 13,197.45, 19,796.19 and 3,963.45 is: 5,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.45 : 19,796.19 = 3,963.45 : x
  2. Step 2: Convert to fraction form
    13,197.45/19,796.19 = 3,963.45/x
  3. Step 3: Cross multiply
    13,197.45x = 19,796.19 × 3,963.45
  4. Step 4: Simplify right side
    13,197.45x = 78,461,209.26
  5. Step 5: Solve for x
    x = 78,461,209.26/13,197.45
  6. Step 6: Final answer
    x = 5,945.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.