In 2023, among the newborns in the United States, Canada, and China, according to data from the Population Division of United Nations, which country has the lowest proportion of girls? What is the ratio of male to female newborns in that country to 100? (Round to one decimal place, for example, 123.4:100)

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China has the lowest proportion of girls among newborns in 2023.
Its sex ratio at birth is approximately 110.6 boys for every 100 girls (110.6:100).

Summary of steps and data lineage:
We retrieved the 2023 sex-ratio-at-birth figures for China, Canada, and the United States from the latest UN World Population Prospects dataset hosted by Our World in Data, then compared the three values to identify the highest male-to-female ratio .