Answer:
$193,516.95
Step-by-step explanation:
If the YTM decreases, the bond prices will increase, and the value of the bond portfolio will increase.
Change in value of bonds = change in YTM * duration * current value of bonds
Change in value of bonds = 0.17% * 20.5 * $187,000 = $6516.95
New value of bond portfolio = $187,000 + $6516.95 = $193,516.95