On January 2, Year 4, Poplar Ltd. acquired 80% of Spruce Ltd. for $2,070,000 to gain control over mineral rights valued at $767,500. The acquisition revealed that Spruce's assets, aside from the mineral rights, were recorded at their fair values. Additional transactions between Poplar and Spruce are detailed, including equipment sales, inventory purchases, and bond transactions, requiring consolidated financial statements and the calculation of the investment balance as of December 31, Year 7.