To determine if the equations represent proportions, we need to see if the ratios of the two pairs of numbers are equal.
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For the equation \( 168 = 2412 \): To understand this as a proportion, we can check if \( \frac{168}{x} = \frac{2412}{y} \) for some \( x \) and \( y \). However, since there is no other part mentioned to compare to here, we cannot determine this as a valid proportion.
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For the equation \( 84 = 126 \): Similarly, for this part, we will check if \( \frac{84}{z} = \frac{126}{w} \) for some \( z \) and \( w \). But again, there isn't a second number provided to compare, making it impossible to affirm it as a proportion.
In simpler terms, a proportion is a statement that two ratios (fractions) are equal. Since both given statements do not compare proper ratios, neither represents a proportion.
Thus, the answer is Neither is a proportion.