Proportionality

SELECT * FROM gallery2 WHERE topic_id="1564103" UNION SELECT * FROM gallery2 WHERE topic_id="492645" UNION SELECT * FROM gallery2 WHERE topic_id="742368" UNION SELECT * FROM gallery2 WHERE topic_id="1302076" UNION SELECT * FROM gallery2 WHERE topic_id="1675831" UNION SELECT * FROM gallery2 WHERE topic_id="477367" UNION SELECT * FROM gallery2 WHERE topic_id="1498380" UNION SELECT * FROM gallery2 WHERE topic_id="116313" UNION SELECT * FROM gallery2 WHERE topic_id="553880" UNION SELECT * FROM gallery2 WHERE topic_id="449512" UNION SELECT * FROM gallery2 WHERE topic_id="959098" UNION SELECT * FROM gallery2 WHERE topic_id="1246439" UNION SELECT * FROM gallery2 WHERE topic_id="659362" UNION SELECT * FROM gallery2 WHERE topic_id="1285096" UNION SELECT * FROM gallery2 WHERE topic_id="732739" UNION SELECT * FROM gallery2 WHERE topic_id="1475057"