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Finding the Fourth Proportional to 19,563.60, 26,992.08 and 12,759.60

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Solution

The fourth proportional to 19,563.60, 26,992.08 and 12,759.60 is: 17,604.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,563.60 : 26,992.08 = 12,759.60 : x
  2. Step 2: Convert to fraction form
    19,563.60/26,992.08 = 12,759.60/x
  3. Step 3: Cross multiply
    19,563.60x = 26,992.08 × 12,759.60
  4. Step 4: Simplify right side
    19,563.60x = 344,408,143.97
  5. Step 5: Solve for x
    x = 344,408,143.97/19,563.60
  6. Step 6: Final answer
    x = 17,604.54

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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.