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Finding the Fourth Proportional to 19,893.50, 27,453.72 and 10,941.68

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Solution

The fourth proportional to 19,893.50, 27,453.72 and 10,941.68 is: 15,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.50 : 27,453.72 = 10,941.68 : x
  2. Step 2: Convert to fraction form
    19,893.50/27,453.72 = 10,941.68/x
  3. Step 3: Cross multiply
    19,893.50x = 27,453.72 × 10,941.68
  4. Step 4: Simplify right side
    19,893.50x = 300,389,819.05
  5. Step 5: Solve for x
    x = 300,389,819.05/19,893.50
  6. Step 6: Final answer
    x = 15,099.90

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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.