The phrase "a fraction of each" is correct and usable in written English.
It can be used when referring to a small part or portion of multiple items or categories.
Example: "In the budget report, we allocated a fraction of each department's funds to the new project."
Alternatives: "a portion of each" or "a part of each".
Spokesmen for both companies said they had no plans to trim their Argentine holdings for now, mainly because their Argentine operations account for only a fraction of each company's overall business.
In 1986 electronic systems were introduced to link numerous slot machines in different locations and thereby allow a fraction of each inserted coin to go into a shared "super jackpot," which may reach an extremely large size before it is won; for example, in 2003 a Las Vegas slot machine paid out nearly $40 million.
Is it worth limited partners' time to learn about the new product for which there may only be four or five funds, and of which they'd only be a fraction of each?" Clay Thorp, of Hatteras Venture Partners in Durham, N.C., said that the poor track record of the S.B.A.'s earlier program could make investors wary of the new one.
Jeremy C. Stein, a Harvard professor who is part of the group, said that holding back a fraction of each year's bonus pool would make bank executives act more like taxpayers (who do not benefit when a huge bank is profitable, but bear the costs when one has to be bailed out) and less like shareholders (who often favor short-term risks in the hope of scoring a quick profit).
Thus most subsystems only operate for a fraction of each orbit.
For the non-cooperative system, the source should firstly harvest the wireless energy from its destination in a fraction of each time block.
A fraction of the each sputum sample was processed by the Clinical Microbiology Laboratory of the hospital for microbiological analysis.
Mr. Gilmore, of the Electronic Frontier Foundation, would rather have people pay for privacy protection, preferably with micropayments (each a fraction of a cent) for each encrypted e-mail message, than accept the free products that come with advertising.
Only a fraction of students from each class historically remain at their initial employers in the four years after graduation.
Pandora pays a fraction of a cent each time a song is streamed, which last year amounted to about 54 percent of its revenue, or $149 million.
The capacitors cost just a fraction of a penny each and helped control the flow of electricity to various computer components.
