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Finding the Fourth Proportional to 13,191.99, 19,787.73 and 5,296.29

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Solution

The fourth proportional to 13,191.99, 19,787.73 and 5,296.29 is: 7,944.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.99 : 19,787.73 = 5,296.29 : x
  2. Step 2: Convert to fraction form
    13,191.99/19,787.73 = 5,296.29/x
  3. Step 3: Cross multiply
    13,191.99x = 19,787.73 × 5,296.29
  4. Step 4: Simplify right side
    13,191.99x = 104,801,556.52
  5. Step 5: Solve for x
    x = 104,801,556.52/13,191.99
  6. Step 6: Final answer
    x = 7,944.33

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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.