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Finding the Fourth Proportional to 12,997.44, 19,484.64 and 11,960.64

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Solution

The fourth proportional to 12,997.44, 19,484.64 and 11,960.64 is: 17,930.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997.44 : 19,484.64 = 11,960.64 : x
  2. Step 2: Convert to fraction form
    12,997.44/19,484.64 = 11,960.64/x
  3. Step 3: Cross multiply
    12,997.44x = 19,484.64 × 11,960.64
  4. Step 4: Simplify right side
    12,997.44x = 233,048,764.57
  5. Step 5: Solve for x
    x = 233,048,764.57/12,997.44
  6. Step 6: Final answer
    x = 17,930.36

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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.