Determine the missing amounts in each of the following four independent scenarios:

a. W Co. had a $5,000 beginning balance in accounts receivable on January 1, Year 4. During Year 4, the company earned $72,500 of revenue on account and collected $70,000 cash from accounts receivable. Based on this information alone, determine the amount of the ending balance in accounts receivable.

b. W Co. had a $3,200 ending balance in accounts receivable on December 31, Year 4. During Year 4, the company earned $60,600 of revenue on account and collected $61,200 cash from accounts receivable. Based on this information alone, determine the amount of the beginning balance in accounts receivable.
c. W Co. had an $11,300 beginning balance in accounts receivable on January 1, Year 4. During Year 4, the company earned $102,400 of revenue on account. The ending balance in accounts receivable was $15,800. Based on this information alone, determine the amount of cash collections from accounts receivable.
d. W Co. had an $18,000 beginning balance in accounts receivable on January 1, Year 4. During Year 4, the company collected $125,000 of revenue on account. The ending balance in accounts receivable was $28,500. Based on this information alone, determine the amount of cash collections from accounts receivable