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Finding the Fourth Proportional to 19,993.60, 27,586.56 and 11,605.12

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Solution

The fourth proportional to 19,993.60, 27,586.56 and 11,605.12 is: 16,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.60 : 27,586.56 = 11,605.12 : x
  2. Step 2: Convert to fraction form
    19,993.60/27,586.56 = 11,605.12/x
  3. Step 3: Cross multiply
    19,993.60x = 27,586.56 × 11,605.12
  4. Step 4: Simplify right side
    19,993.60x = 320,145,339.19
  5. Step 5: Solve for x
    x = 320,145,339.19/19,993.60
  6. Step 6: Final answer
    x = 16,012.39

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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.