To find the total retail cost of the 5 pairs of curtains, we need to calculate the cost for each pair based on the information given:
- The cost for 1 pair of curtains = $14.28.
- The cost for 2 pairs of curtains = $33.26 per pair.
- The cost for the remaining 2 pairs of curtains = $65.38 per pair.
Now, let's calculate the total cost for each of these:
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Cost of the first pair (1 pair): \[ \text{Cost for 1 pair} = 14.28 \]
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Cost of the second set (2 pairs at $33.26 each): \[ \text{Cost for 2 pairs} = 2 \times 33.26 = 66.52 \]
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Cost of the third set (2 pairs at $65.38 each): \[ \text{Cost for 2 pairs} = 2 \times 65.38 = 130.76 \]
Now, we sum these costs together to calculate the total cost for all 5 pairs of curtains: \[ \text{Total Cost} = 14.28 + 66.52 + 130.76 \]
Calculating this step by step:
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Add $14.28 and $66.52: \[ 14.28 + 66.52 = 80.80 \]
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Now, add $80.80 and $130.76: \[ 80.80 + 130.76 = 211.56 \]
Thus, the total retail cost of the 5 pairs of curtains is \(\boxed{211.56}\).