Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_4629 ( "Religious group" text, "Population %" text, "Growth (1991\u20132001)" text, "Sex ratio (total)" real, "Literacy (%)" text, "Work participation (%)" text, "Sex ratio (rural)" real, "Sex ratio (urban)" real, "Sex ratio (child)" real )

### Question ###
What is the child sex ration for the population with 37.7% work participation?

### Accurate SQL ###

SELECT MAX("Sex ratio (child)") FROM table_4629 WHERE "Work participation (%)" = '37.7%'