One item is omitted in each of the following summaries of balance sheet and income statement data for three different sole corporations, X, Y, and Z. Determine the amounts of the missing items, identifying each corporation by letter. 
Definitions:
Related Diversification
A strategy where a business expands its activities into areas that are similar to its existing operations.
Organisational Growth
The process by which an organization increases in size, resources, capabilities, or market share over time.
Core Competencies
Fundamental strengths and abilities of a company that give it a competitive advantage.
Organisational Strength
The capabilities and resources that give an organization a competitive edge or superior performance ability.
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