The total amount of indebtedness or liability which this Association may incur at any one time shall not exceed 150 percent of its income for the previous fiscal year, provided that additional amounts may be authorized at a duly held meeting at which a quorum is present by the assent of two-thirds (2/3), in person or by proxy, of each class of members entitled to vote and provided further that this Article shall not be construed to prohibit the Association from acquiring real property subject to encumbrances for the purpose of financing facilities located on the real property so acquired.