The average annual fiscal revenue of Shaanxi province in these three years is 654.38+0269 billion yuan;

(2)∵ × 100%≈27%,

From 2004 to 2005, the average annual growth rate of fiscal revenue in Shaanxi Province was about 27%.

(3) ∫ 528 (1+27%) = 670.56 ≈ 671(one hundred million yuan),

∴ The fiscal revenue in 2006 was about 67 1 100 million yuan.