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Finding the Fourth Proportional to 13,893.22, 19,173.09 and 7,924.78

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Solution

The fourth proportional to 13,893.22, 19,173.09 and 7,924.78 is: 10,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,893.22 : 19,173.09 = 7,924.78 : x
  2. Step 2: Convert to fraction form
    13,893.22/19,173.09 = 7,924.78/x
  3. Step 3: Cross multiply
    13,893.22x = 19,173.09 × 7,924.78
  4. Step 4: Simplify right side
    13,893.22x = 151,942,520.17
  5. Step 5: Solve for x
    x = 151,942,520.17/13,893.22
  6. Step 6: Final answer
    x = 10,936.45

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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.