How Do You Solve Equations with Floor Functions and Logarithms?

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inqusoc
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hi I'm new here. For a couple of days i am struggling to methodically solve an equation involving the integer part of a fraction but nothing yet. The equation is;
Equation: 15 = floor of x divided by (ln(x) - 0.52), where the floor brackets denote the integer part.

I found that the apparent solution is 53 as x HAS to be integer. Yet, I cannot mathematically prove how to compute x to be equal to 53. Any opinion is welcome, thanks!
 
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  • Equation 15 = floor of x divided by (ln(x) - 0.52), with the floor brackets enclosing the fraction x over ln(x) minus 0.52.
    upload_2015-8-15_18-12-29.png
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There is no way to solve the equation analytically with x and ln(x) like that. Numerical approaches are the best option, for small integer x this just means trial and error.

52 to 56 all work for x.