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Finding the Fourth Proportional to 12,472.80, 17,212.44 and 7,996.54

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Solution

The fourth proportional to 12,472.80, 17,212.44 and 7,996.54 is: 11,035.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.80 : 17,212.44 = 7,996.54 : x
  2. Step 2: Convert to fraction form
    12,472.80/17,212.44 = 7,996.54/x
  3. Step 3: Cross multiply
    12,472.80x = 17,212.44 × 7,996.54
  4. Step 4: Simplify right side
    12,472.80x = 137,639,964.96
  5. Step 5: Solve for x
    x = 137,639,964.96/12,472.80
  6. Step 6: Final answer
    x = 11,035.21

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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.