Foreign currencies accounting with sub ledger

Hello Friends,

Hello Friend,

Can we do the following accounting entries with foreign currencies transactions.

Foreign currency PO receipt at one FX rate whereas the invoice entry is at another FX rate.
 
Ex:  PO 32404056 receipt 4235 and invoice 1234- FX rate at receipt 1.251, FS rate at invoice entry 1.2565. 
                                Accounting is cost center 0000 when it should be 55000
 
Second scenario:    Japan ACM issue:  PO raised in USD at one rate and invoice entered in USD at another rate, ledger is in JPY
 
Ex:             PO 35103965 raised in USD at 14.5 and invoice 146436 eneterd at 14.0327
                                Accounting is cost center 0000 when it should be 5500
 
3'rd scenario     Japan ACM issue:  AP Invoice entered at one rate and payment entered at another rate