Is this chain of inequalities correct?

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Is this chain of inequalities correct? If not how to make it works? $$\frac{\ln \left( 1+x^3+y^3 \right)}{\sqrt{x^2+y^2}} \le \frac{\left( x^3+y^3 \right)}{\sqrt{x^2+y^2}} \le \frac{ \left( x+y\right) \left( x^2+y^2\right) }{\sqrt{x^2+y^2}}=\frac{\left( x+y\right) \left( x^2+y^2\right) \sqrt{x^2+y^2}}{x^2+y^2}= \left( x+y \right) \sqrt{x^2+y^2}$$