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Finding the Fourth Proportional to 12,808.60, 19,212.90 and 5,896.60

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Solution

The fourth proportional to 12,808.60, 19,212.90 and 5,896.60 is: 8,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.60 : 19,212.90 = 5,896.60 : x
  2. Step 2: Convert to fraction form
    12,808.60/19,212.90 = 5,896.60/x
  3. Step 3: Cross multiply
    12,808.60x = 19,212.90 × 5,896.60
  4. Step 4: Simplify right side
    12,808.60x = 113,290,786.14
  5. Step 5: Solve for x
    x = 113,290,786.14/12,808.60
  6. Step 6: Final answer
    x = 8,844.90

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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.