The answer is no : if you run the following Magma code :
M:=Matrix(Integers(),4,4,[1,0,1,1,0,2,1,2,0,0,5,1,0,0,0,10]);
M:=M+Transpose(M);
L:=LatticeWithGram(M);
H:=GenusRepresentatives(L);
for h in H do
print "h= lattice with Gram", GramMatrix(h);
hd:=DualBasisLattice(h);
MD:=37*LLLGram(GramMatrix(hd));
print "rescaled dual = lattice with Gram", MD;
a,b:=IsIsometric(h,LatticeWithGram(MD));
print "are isometric : ", a;
print " ";
end for;
on the online calculator, you obtain the following result :
h= lattice with Gram
[ 2 0 1 1]
[ 0 4 1 2]
[ 1 1 10 1]
[ 1 2 1 20]
rescaled dual = lattice with Gram
[ 2 0 -1 -1]
[ 0 4 -1 -2]
[-1 -1 10 1]
[-1 -2 1 20]
are isometric : true
h= lattice with Gram
[ 4 -1 2 1]
[-1 4 -1 0]
[ 2 -1 6 -2]
[ 1 0 -2 20]
rescaled dual = lattice with Gram
[ 2 1 -1 0]
[ 1 8 -4 1]
[-1 -4 12 2]
[ 0 1 2 10]
are isometric : false
h= lattice with Gram
[ 4 1 1 1]
[ 1 6 3 1]
[ 1 3 8 -1]
[ 1 1 -1 10]
rescaled dual = lattice with Gram
[ 4 1 -1 -1]
[ 1 6 -3 -1]
[-1 -3 8 -1]
[-1 -1 -1 10]
are isometric : true
h= lattice with Gram
[ 2 1 0 -1]
[ 1 8 -1 -4]
[ 0 -1 10 -2]
[-1 -4 -2 12]
rescaled dual = lattice with Gram
[ 4 1 1 0]
[ 1 4 2 1]
[ 1 2 6 -2]
[ 0 1 -2 20]
are isometric : false